12010
domain: N
Properties
Digital Properties
- Digit Count
- 5
- Digit Sum
- 4
- Digital Root
- 4
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 1
Divisibility
- Divisor Count
- 8
- Divisor Sum
- 21636
- Proper Divisor Sum (Aliquot Sum)
- 9626
- Abundant Number
- no
- Perfect Number
- no
- Deficient Number
- yes
- Weird Number
- no
- Untouchable Number
- no
- Primitive Abundant
- no
Derived Values
- Euler's Totient
- 4800
- Möbius Function
- -1
- Radical
- 12010
- 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
- 50
- 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
- A Fielder sequence. a(n) = a(n-1) + a(n-3) + a(n-4) + a(n-5), n >= 6.at n=17A001639
- a(n) = 4^n - 2*3^n.at n=7A002250
- Number of Hamiltonian paths in P_4 X P_n.at n=6A003695
- Coordination sequence for MgNi2, Position Ni2.at n=27A009932
- a(n) = [ a(n-1)/a(1) ] + [ a(n-3)/a(3) ] + [ a(n-5)/a(5) ] + ..., for n >= 3.at n=35A022878
- "BGK" (reversible, element, unlabeled) transform of 2,1,1,1,...at n=23A032062
- Numbers k such that 183*2^k+1 is prime.at n=27A032468
- Base-7 palindromes that start with 5.at n=16A043019
- Zero, together with positive numbers k such that prime(k) - k is a square.at n=37A064370
- Zero-based position of the least significant (rightmost) zero bit in the bit-masks A068222 (A068224).at n=49A068058
- Numbers in base -3.at n=24A073785
- Full Łukasiewicz word for each rooted plane tree (interpretation e in Stanley's exercise 19) encoded by A014486 (or A063171).at n=18A079436
- Numbers n such that prime(n) - n is a perfect power.at n=44A107607
- Numbers k such that 609 * 10^k - 1 is prime.at n=25A108320
- 10 times A007623.at n=37A124252
- Numbers k such that k and k^2 use only the digits 0, 1, 2 and 4.at n=56A136816
- Numbers n such that sum of squares of factorials of digits of n is a power of 2.at n=40A174570
- Partial sums of A045542.at n=38A177955
- Number of distinct values of the sum of 5 products of three 0..n integers.at n=13A225262
- Numbers n such that n*2^1279 - 1 is prime.at n=32A265502