12402
domain: N
Properties
Digital Properties
- Digit Count
- 5
- Digit Sum
- 9
- Digital Root
- 9
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 1
Divisibility
- Divisor Count
- 24
- Divisor Sum
- 29484
- Proper Divisor Sum (Aliquot Sum)
- 17082
- Abundant Number
- yes
- Perfect Number
- no
- Deficient Number
- no
- Weird Number
- no
- Untouchable Number
- no
- Primitive Abundant
- no
Derived Values
- Euler's Totient
- 3744
- Möbius Function
- 0
- Radical
- 4134
- Omega Function (Ω)
- 5
- Little Omega Function (ω)
- 4
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
- yes
- Narcissistic Number
- no
- Collatz Steps
- 37
- Smith Number
- no
- Vampire 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
Appears in sequences
- Convolved Fibonacci numbers.at n=10A001872
- a(n) = n*(n+1)*(2*n+1)/3.at n=26A006331
- a(0) = 1, a(n) = 31*n^2 + 2 for n>0.at n=20A010020
- Coordination sequence for root lattice B_3.at n=25A022145
- Numbers k such that 249*2^k+1 is prime.at n=44A032501
- a(n) = 2*n*(4*n + 3).at n=39A033587
- Bisection of Fibonacci triangle A037027: even-indexed members of column sequences of A037027 (not counting leading zeros).at n=39A060920
- Fourth column (m=3) of triangle A060920 (bisection of Fibonacci triangle, even part).at n=5A061179
- List of codewords in binary lexicode with Hamming distance 6 written as decimal numbers.at n=17A075934
- Numbers k such that 216*k+108 is a term of A097703 and A007494 and A098240.at n=11A098241
- Sum of two consecutive squares of Lucas 4-step numbers (A073817).at n=6A106791
- 1/12 of product of three numbers: n-th prime, previous and following number.at n=14A127921
- Numbers k such that lambda(k) = lambda(k+1).at n=17A173695
- a(n) = floor(n^(3/2))*floor(3+n^(3/2))/2.at n=28A185593
- Subsequence of lesser of 2 terms of A095301 that are 2 apart.at n=3A248083
- Sum of the areas of the squares on the sides of the distinct rectangles that can be made with positive integer sides such that L + W = n, W < L.at n=26A294473
- Coordination sequence for "tcd" 3D uniform tiling.at n=40A299287
- Number of separable partitions of n in which the number of distinct (repeatable) parts is > 5.at n=41A325720
- Numbers k such that the binary representations of 1/k and 1/(k+1) have the same period (A007733).at n=41A333745
- Total area of all distinct rectangles whose length and width are relatively prime and L + W = n.at n=52A334628