124
domain: N
Properties
Digital Properties
- Digit Count
- 3
- Digit Sum
- 7
- Digital Root
- 7
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 1
Divisibility
- Divisor Count
- 6
- Divisor Sum
- 224
- Proper Divisor Sum (Aliquot Sum)
- 100
- Abundant Number
- no
- Perfect Number
- no
- Deficient Number
- yes
- Highly Composite
- no
- Weird Number
- no
- Untouchable Number
- yes
- Primitive Abundant
- no
Derived Values
- Euler's Totient
- 60
- Möbius Function
- 0
- Radical
- 62
- Omega Function (Ω)
- 3
- Little Omega Function (ω)
- 2
Special
- Factorial
- no
- Catalan Number
- no
- Bell Number
- no
- Motzkin Number
- no
- Primorial
- no
Figurate Numbers
- Fibonacci Number
- no
- Triangular Number
- no
- Perfect Square
- no
- Perfect Cube
- no
- Pentagonal Number
- no
- Hexagonal Number
- no
- Lucas Number
- no
- Tetrahedral Number
- no
- Pell Number
- no
- Tribonacci Number
- no
- Pronic Number
- no
Recreational
- Happy Number
- no
- Harshad Number
- no
- Narcissistic Number
- no
- Collatz Steps
- 108
- Smith Number
- no
Primality
- Prime
- no
- Composite Number
- yes
- Semiprime
- no
- Squarefree Number
- no
- Prime Power
- no
- Prime Factorization
- no
- Twin Prime
- no
- Mersenne Prime
- no
- Sophie Germain Prime
- no
- Safe Prime
- no
- Powerful Number
- no
- Achilles Number
- no
- Perfect Power
- no
- Smooth Number
- no
- Carmichael Number
- no
Classification
- Even
- yes
- Odd
- no
Names
- German
- einshundertvierundzwanzig· ordinal: einshundertvierundzwanzigste
- English
- one hundred twenty-four· ordinal: one hundred twenty-fourth
- Spanish
- ciento veinticuatro· ordinal: 124º
- French
- cent vingt-quatre· ordinal: cent vingt-quatrième
- Italian
- centoventiquattro· ordinal: 124º
- Latin
- centum viginti quattuor· ordinal: 124.
- Portuguese
- cento e vinte e quatro· ordinal: 124º
Appears in sequences
- Numbers k such that (2k)^4 + 1 is prime.at n=35A000059
- Odious numbers: numbers with an odd number of 1's in their binary expansion.at n=62A000069
- a(n) = sigma(n), the sum of the divisors of n. Also called sigma_1(n).at n=47A000203
- 3*n - 2*floor(sqrt(4*n+5)) + 5.at n=49A000277
- Numbers where total number of 1-bits in the exponents of their prime factorization is even; a 2-way classification of integers: complement of A000028.at n=65A000379
- n written in base where place values are positive cubes.at n=47A000433
- Sum of odd divisors of n.at n=74A000593
- Number of partitions of n into prime parts.at n=32A000607
- Related to population of numbers of form x^2 + y^2.at n=8A000709
- a(n) = n! * (1 + 2*Sum_{k=1..n} 1/k).at n=4A000776
- Erroneous version of A007535.at n=4A000783
- Numbers beginning with a vowel in English.at n=38A000852
- Numbers beginning with letter 'o' in English.at n=25A000865
- Number of switching networks with S(n) and C(2,2) acting on the domain and AG(2,2) acting on the range.at n=2A000889
- a(2n) = n+2, a(2n-1) = smallest number requiring n+2 letters in English.at n=40A000916
- Genus of complete graph on n nodes.at n=41A000933
- Numbers m such that Sum_{k=0..m-1} exp(2*Pi*i*k^3/m) != 0.at n=35A001074
- Iccanobif numbers: reverse digits of two previous terms and add.at n=9A001129
- Number of partitions of n into squares.at n=53A001156
- Smallest natural number requiring n letters in English.at n=20A001166