1342
domain: N
Properties
Digital Properties
- Digit Count
- 4
- Digit Sum
- 10
- Digital Root
- 1
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 2
Divisibility
- Divisor Count
- 8
- Divisor Sum
- 2232
- Proper Divisor Sum (Aliquot Sum)
- 890
- 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
- 600
- Möbius Function
- -1
- Radical
- 1342
- Omega Function (Ω)
- 3
- Little Omega Function (ω)
- 3
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
- 96
- Smith Number
- no
- Vampire Number
- no
Primality
- Prime
- no
- Composite Number
- yes
- Semiprime
- no
- 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
- yes
- Odd
- no
Appears in sequences
- Number of partitions of n into at most 5 parts.at n=37A001401
- Number of polyhedral graphs with n edges.at n=11A002840
- a(n) = 1000*log_10(n) rounded down.at n=21A004225
- a(n) = 1000*log_10(n) rounded to the nearest integer.at n=21A004226
- Concatenation of sequence (1,3,..,2n-1,2n,2n-2,..,2).at n=1A007943
- Coordination sequence T1 for Zeolite Code DDR.at n=23A008071
- Expansion of (1+x^9)/((1-x)*(1-x^2)*(1-x^3)*(1-x^4)).at n=45A008770
- Coordination sequence T1 for Zeolite Code DFO.at n=28A009875
- Numbers k such that phi(k) | sigma(k + 5).at n=45A015843
- Cycle class sequence c(n) (the number of true cycles of length n in which a certain node is included) for zeolite FER = Ferrierite Na2Mg2[Al6Si30O72].18H2O starting with a T4 atom.at n=10A019132
- Positive numbers k such that k and 2*k are anagrams in base 6 (written in base 6).at n=0A023064
- a(n) = position of n^2 + (n+1)^2 in A004431 (sums of 2 distinct nonzero squares).at n=48A024513
- a(n) = Sum_{k=1..n} k*floor(n/k); also Sum_{k=1..n} sigma(k) where sigma(n) = sum of divisors of n (A000203).at n=39A024916
- Index of 7^n within the sequence of the numbers of the form 7^i*9^j.at n=54A025726
- Number of partitions of n in which the greatest part is 5.at n=42A026811
- a(n) = binomial(n+2, 2) + binomial(n+4, 5).at n=9A027658
- Numbers k such that k^2 is palindromic in base 3.at n=25A029984
- Decimal representation of permutations of lengths 1, 2, 3, ... arranged lexicographically.at n=12A030299
- Quotient of 'base-25' division described in A032581.at n=60A032582
- Sums of distinct powers of 11.at n=10A033047