14281
domain: N
Properties
Digital Properties
- Digit Count
- 5
- Digit Sum
- 16
- Digital Root
- 7
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 3
Divisibility
- Divisor Count
- 2
- Divisor Sum
- 14282
- Proper Divisor Sum (Aliquot Sum)
- 1
- Abundant Number
- no
- Perfect Number
- no
- Deficient Number
- yes
- Weird Number
- no
- Untouchable Number
- no
- Primitive Abundant
- no
Derived Values
- Euler's Totient
- 14280
- Möbius Function
- -1
- Radical
- 14281
- Omega Function (Ω)
- 1
- Little Omega Function (ω)
- 1
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
- yes
- Harshad Number
- no
- Narcissistic Number
- no
- Collatz Steps
- 102
- Smith Number
- no
- Vampire Number
- no
Primality
- Prime
- yes
- Composite Number
- no
- Semiprime
- no
- Squarefree Number
- yes
- Prime Power
- yes
- Prime Factorization
- no
- Twin Prime
- no
- Mersenne Prime
- no
- Sophie Germain Prime
- no
- Safe Prime
- no
- Powerful Number
- no
- Achilles Number
- no
- Prime Index
- 1676
- Perfect Power
- no
- Smooth Number
- no
- Carmichael Number
- no
Classification
- Even
- no
- Odd
- yes
Appears in sequences
- Primes of form k^2 + k + 1.at n=37A002383
- Half-quartan primes: primes of the form p = (x^4 + y^4)/2.at n=9A002646
- Numbers k such that the continued fraction for sqrt(k) has period 39.at n=29A020378
- a(n) = s(n+3)/5, where s is A024729.at n=13A024730
- a(n) = least m such that if r and s in {1/1, 1/3, 1/5, ..., 1/(2n-1)} satisfy r < s, then r < k/m < (k+3)/m < s for some integer k.at n=44A024844
- Primes of the form j^2 + (j+1)^2.at n=29A027862
- Numbers k such that k^2 is palindromic in base 9.at n=21A029994
- Primes p for which the period of reciprocal 1/p is (p-1)/12.at n=15A056217
- Primes which can be written as (b^k+1)/(b+1) for positive integers b and k.at n=45A059055
- Primes with 19 as smallest positive primitive root.at n=11A061331
- Partial sums of sequence (essentially A002378): 1, 2, 6, 12, 20, 30, 42, 56, 72, 90, ...at n=34A064999
- Numbers having exactly six anti-divisors.at n=40A066472
- Centered 24-gonal numbers.at n=34A069190
- Primes of the form 210n + 1.at n=32A073102
- Terms of A072390 (sums of two powers of 13) divided by 2.at n=10A073220
- Primes of the form 4*k^2 - 10*k + 7 with k positive.at n=21A073337
- Final terms of rows of A077321.at n=34A077323
- Largest prime dividing sigma(4,n).at n=37A078553
- Largest prime dividing sigma(4,n).at n=24A078553
- Largest prime dividing sigma(4,n).at n=11A078553