1042
domain: N
Properties
Digital Properties
- Digit Count
- 4
- Digit Sum
- 7
- Digital Root
- 7
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 1
Divisibility
- Divisor Count
- 4
- Divisor Sum
- 1566
- Proper Divisor Sum (Aliquot Sum)
- 524
- 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
- 520
- Möbius Function
- 1
- Radical
- 1042
- 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
- 124
- 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
- yes
- Odd
- no
Appears in sequences
- 4th powers written backwards.at n=6A002108
- a(n) = n^2 written backwards.at n=48A002942
- Numbers that are the sum of 12 positive 5th powers.at n=49A003357
- a(n) = ceiling(1000*log_10(n)).at n=10A004227
- a(n) = floor(n*phi^13), where phi is the golden ratio, A001622.at n=2A004928
- a(n) = round(n*phi^13), where phi is the golden ratio, A001622.at n=2A004948
- a(n) = ceiling(tan(n)^2).at n=77A005699
- Coordination sequence T1 for Zeolite Code AWW.at n=23A008045
- Coordination sequence T4 for Zeolite Code BOG.at n=23A008052
- Coordination sequence T4 for Zeolite Code GOO.at n=22A008114
- Coordination sequence T1 for Zeolite Code TON.at n=20A008241
- Coordination sequence T1 for Keatite.at n=18A009844
- Coordination sequence T3 for Zeolite Code RSN.at n=21A009887
- Coordination sequence T1 for Zeolite Code RTE.at n=22A009890
- Coordination sequence T3 for Zeolite Code RTE.at n=22A009892
- Numbers k such that the continued fraction for sqrt(k) has period 5.at n=29A010337
- Number of ordered triples of integers from [ 2,n ] with no global factor.at n=18A015633
- Number of 8's in all the partitions of n into distinct parts.at n=49A015743
- Number of partitions of n into distinct parts, none being 8.at n=42A015755
- Numbers k such that phi(k) + 4 | sigma(k + 4).at n=41A015783