14023
domain: N
Properties
Digital Properties
- Digit Count
- 5
- Digit Sum
- 10
- Digital Root
- 1
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 1
Divisibility
- Divisor Count
- 4
- Divisor Sum
- 14440
- Proper Divisor Sum (Aliquot Sum)
- 417
- Abundant Number
- no
- Perfect Number
- no
- Deficient Number
- yes
- Weird Number
- no
- Untouchable Number
- no
- Primitive Abundant
- no
Derived Values
- Euler's Totient
- 13608
- Möbius Function
- 1
- Radical
- 14023
- 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
- 32
- 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
- G.f.: (1 + x^3 + x^4 + ... + x^12 + x^15)/Product_{i=1..10} (1 - x^i).at n=30A003403
- Pseudoprimes to base 84.at n=32A020212
- Strong pseudoprimes to base 40.at n=16A020266
- Strong pseudoprimes to base 84.at n=9A020310
- T(n,n+1), array T as in A047089.at n=8A047095
- 23-gonal numbers: a(n) = n(21n-19)/2.at n=37A051875
- Squares of 1 and primes, written backwards.at n=41A060998
- Semiprimes that are the sum of two positive cubes. Common terms of A003325 and A046315.at n=42A085366
- Numbers k such that if P = 10*k^2+1, then P, P+6, P+12 and P+18 are all primes.at n=36A092446
- Numbers which are the sum of two positive cubes and divisible by 37.at n=17A102618
- Semiprimes whose digit reversal is a nontrivial power.at n=32A108849
- Semiprimes (A001358) whose digit reversal is a powerful(1) number (A001694).at n=38A115688
- Semiprimes (A001358) whose digit reversal is a square.at n=27A115710
- Number of isomorphism classes of linking pairings on finite Abelian 2-groups of fixed order 2^n.at n=20A122555
- Number of ways to arrange 2 nonattacking knights on the lower triangle of an n X n board.at n=17A194486
- Number of Dyck n-paths all of whose ascents and descents have lengths equal to 1 (mod 9).at n=35A212368
- Odd k for which abs(2^m - k) is nonprime for all m < k.at n=8A263865
- Values of a^3 + b^3 such that the equation a^3 + b^3 = x^2 + y^2 + z^2 is not soluble where a, b > 0 and x, y, z >= 0.at n=34A272174
- Starting with a(1) = 0, a(2) = 1, a(n) = smallest nonnegative integer that shares all digits with previous terms. No repeated digits are allowed.at n=43A297062
- Integers x such that [f(0), f(f(0)), ..., f(...f(0)...)] is a permutation of [0, 1, ..., k-1], where k is the number of digits in x and f(a) denotes the 0-based index of the first occurrence of the substring a in x.at n=14A307620