1175
domain: N
Properties
Digital Properties
- Digit Count
- 4
- Digit Sum
- 14
- Digital Root
- 5
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 3
Divisibility
- Divisor Count
- 6
- Divisor Sum
- 1488
- Proper Divisor Sum (Aliquot Sum)
- 313
- 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
- 920
- Möbius Function
- 0
- Radical
- 235
- Omega Function (Ω)
- 3
- 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
- 119
- 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
- no
- Odd
- yes
Appears in sequences
- a(n) = n*(n+3)/2.at n=47A000096
- Generalized Stirling numbers, [n+5,5]_3.at n=3A001712
- a(n+1) = n*a(n) - (-1)^n.at n=6A003048
- a(n) = ceiling(n*phi^8), where phi is the golden ratio, A001622.at n=25A004963
- Coordination sequence T4 for Zeolite Code AFR.at n=26A008022
- Coordination sequence T1 for Zeolite Code MON.at n=21A008181
- Multiples of 25.at n=47A008607
- Number of partitions of n into at most 7 parts.at n=27A008636
- Expansion of (1+x^9)/((1-x)*(1-x^2)*(1-x^3)*(1-x^4)).at n=43A008770
- a(n) is nonsquarefree and is sum of first k nonsquarefrees for some k.at n=11A013935
- a(n) = n*(2*n-3).at n=25A014107
- Odd numbers k such that d(k) does not divide phi(k).at n=31A015734
- Numbers k such that the period of the continued fraction for sqrt(k) contains exactly five 1's.at n=13A020441
- Expansion of Product (1-m*q^m)^-15; m=1..infinity.at n=3A022739
- Third elementary symmetric function of 3,4,...,n+4.at n=2A024184
- a(n) = position of 3*(n^2) in A000408.at n=21A024800
- a(n) = floor(4th elementary symmetric function of Sum_{j=1..k} 1/j, k = 1,2,...,n).at n=4A025214
- (d(n)-r(n))/5, where d = A006527 and r is the periodic sequence with fundamental period (4,1,4,0,1).at n=24A026036
- a(n) = sum of the numbers between the two n's in A026276.at n=31A026279
- a(n) = position of the n-th n in A026400.at n=31A026403