1254
domain: N
Properties
Digital Properties
- Digit Count
- 4
- Digit Sum
- 12
- Digital Root
- 3
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 2
Divisibility
- Divisor Count
- 16
- Divisor Sum
- 2880
- Proper Divisor Sum (Aliquot Sum)
- 1626
- Abundant Number
- yes
- Perfect Number
- no
- Deficient Number
- no
- Highly Composite
- no
- Weird Number
- no
- Untouchable Number
- no
- Primitive Abundant
- no
Derived Values
- Euler's Totient
- 360
- Möbius Function
- 1
- Radical
- 1254
- Omega Function (Ω)
- 4
- 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
- no
- Narcissistic Number
- no
- Collatz Steps
- 132
- 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
- -1 + number of partitions of n.at n=23A000065
- Number of partitions of n into relatively prime parts. Also aperiodic partitions.at n=23A000837
- a(n) = solution to the postage stamp problem with 3 denominations and n stamps.at n=24A001208
- a(0) = 1, a(1) = 6, a(2) = 24; for n>=3, a(n) = 4a(n-1) - a(n-2).at n=5A001352
- Numbers m such that 4*3^m + 1 is prime.at n=12A005537
- 5-dimensional pyramidal numbers: a(n) = n*(n+1)*(n+2)*(n+3)*(2n+3)/5!.at n=7A005585
- Inverse Moebius transform of triangular numbers.at n=48A007437
- Irregular triangle read by rows: Whitney numbers of the second kind a(n,k), n >= 1, k >= 0, for the star poset.at n=34A007799
- Coordination sequence T3 for Zeolite Code AFS and BPH.at n=27A008025
- Coordination sequence T2 for Zeolite Code DDR.at n=22A008072
- Coordination sequence T1 for Zeolite Code HEU.at n=23A008116
- Coordination sequence T4 for Zeolite Code MEI.at n=26A008149
- Coordination sequence T3 for Zeolite Code MTT.at n=22A008191
- Coordination sequence T3 for Zeolite Code DFO.at n=27A009877
- Coordination sequence T3 for Zeolite Code VNI.at n=22A009909
- a(n) = floor( n*(n-1)*(n-2)/11 ).at n=25A011893
- Numbers n such that phi(n) | sigma_7(n).at n=40A015765
- Numbers k such that phi(k) | sigma_11(k).at n=45A015769
- Numbers k such that phi(k) | sigma_13(k).at n=36A015771
- Balanced numbers: numbers k such that phi(k) (A000010) divides sigma(k) (A000203).at n=35A020492