1542
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
- 8
- Divisor Sum
- 3096
- Proper Divisor Sum (Aliquot Sum)
- 1554
- Abundant Number
- yes
- Perfect Number
- no
- Deficient Number
- no
- Highly Composite
- no
- Weird Number
- no
- Untouchable Number
- no
- Primitive Abundant
- yes
Derived Values
- Euler's Totient
- 512
- Möbius Function
- -1
- Radical
- 1542
- 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
- 34
- 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
- Cluster series for cubic lattice.at n=5A003211
- Numbers that are the sum of 4 positive 5th powers.at n=23A003349
- Sum of 12 nonzero 8th powers.at n=6A003390
- Numbers that are the sum of 9 positive 9th powers.at n=3A003398
- Numbers that are the sum of at most 9 positive 9th powers.at n=33A004893
- Numbers that are the sum of at most 10 positive 9th powers.at n=36A004894
- Numbers that are the sum of at most 11 positive 9th powers.at n=39A004895
- Numbers that are the sum of at most 12 positive 9th powers.at n=42A004896
- Numbers not of form p + 2^x + 2^y.at n=30A006286
- Coordination sequence T2 for Zeolite Code JBW.at n=26A008122
- Coordination sequence T12 for Zeolite Code MFI.at n=25A008164
- Coordination sequence T7 for Zeolite Code MFI.at n=25A008170
- Coordination sequence T2 for Coesite.at n=21A008268
- Coordination sequence T5 for Zeolite Code -CLO.at n=35A009854
- Cycle class sequence c(n) (the number of true cycles of length n in which a certain node is included) for zeolite EUO = EU-1 Nan[AlnSi112-nO224] starting with a T4 atom.at n=10A019123
- Fibonacci sequence beginning 1, 6.at n=13A022096
- Place where n-th 1 occurs in A023123.at n=33A022785
- Index of 7^n within the sequence of the numbers of the form 4^i*7^j.at n=46A025722
- [ exp(16/21)*n! ].at n=5A030843
- Numbers k such that the continued fraction for sqrt(k) has even period and if the last term of the periodic part is deleted the central term is 38.at n=10A031536