1241
domain: N
Properties
Digital Properties
- Digit Count
- 4
- Digit Sum
- 8
- Digital Root
- 8
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 1
Divisibility
- Divisor Count
- 4
- Divisor Sum
- 1332
- Proper Divisor Sum (Aliquot Sum)
- 91
- Abundant Number
- no
- Perfect Number
- no
- Deficient Number
- yes
- Highly Composite
- no
- Weird Number
- no
- Untouchable Number
- no
- Primitive Abundant
- no
Derived Values
- Euler's Totient
- 1152
- Möbius Function
- 1
- Radical
- 1241
- Omega Function (Ω)
- 2
- 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
- 39
- Smith Number
- no
- Vampire Number
- no
Primality
- Prime
- no
- Composite Number
- yes
- Semiprime
- yes
- Squarefree Number
- yes
- 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
- no
- Odd
- yes
Appears in sequences
- Squares written in base 5.at n=14A001740
- Numbers k such that the k-th tetrahedral number is the sum of 2 tetrahedral numbers.at n=36A002311
- Numbers that are the sum of 2 positive cubes.at n=49A003325
- Numbers that are the sum of 9 positive 6th powers.at n=18A003365
- Centered cube numbers: n^3 + (n+1)^3.at n=8A005898
- Number of set-like atomic species of degree n.at n=45A007650
- Coordination sequence T1 for Zeolite Code CHA.at n=27A008066
- Coordination sequence T4 for Zeolite Code EMT.at n=29A008089
- Coordination sequence T1 for Zeolite Code GIS.at n=26A008266
- Composite but smallest prime factor >= 17.at n=39A008367
- Crystal ball sequence for planar net 4.8.8.at n=30A008577
- a(1)=1, a(n) = n*20^(n-1) + a(n-1).at n=2A014937
- a(n+1) (n >= 1) is smallest number > a(n) which is the sum of cubes of distinct earlier terms.at n=24A019511
- Pseudoprimes to base 72.at n=10A020200
- Pseudoprimes to base 83.at n=21A020211
- Pseudoprimes to base 100.at n=16A020228
- Strong pseudoprimes to base 83.at n=6A020309
- Numbers k such that the continued fraction for sqrt(k) has period 15.at n=9A020354
- Fibonacci sequence beginning 1, 8.at n=12A022098
- Hypotenuses of more than one primitive Pythagorean triangle.at n=45A024409