1124
domain: N
Properties
Digital Properties
- Digit Count
- 4
- Digit Sum
- 8
- Digital Root
- 8
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 1
Divisibility
- Divisor Count
- 6
- Divisor Sum
- 1974
- Proper Divisor Sum (Aliquot Sum)
- 850
- 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
- 560
- Möbius Function
- 0
- Radical
- 562
- 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
- 44
- 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
- yes
- Odd
- no
Appears in sequences
- Convolution of A000203 with itself.at n=12A000385
- Smallest natural number requiring n letters in English.at n=31A001166
- a(n) = 2^n + n^2.at n=10A001580
- Primes multiplied by 4.at n=59A001749
- Number of trees in an n-node wheel.at n=15A002985
- Numbers that are the sum of 8 positive 5th powers.at n=38A003353
- Number of (undirected) Hamiltonian paths in the n-ladder graph K_2 X P_n.at n=33A003682
- Start with a(0)=1; replace each i with 12...i, then add 1 to final digit.at n=3A004071
- Number of n-node vertex-transitive graphs which are not Cayley graphs.at n=20A006792
- Numbers k such that phi(x) = k has exactly 3 solutions.at n=42A007367
- If a, b in sequence, so is ab+4.at n=23A009303
- a(n) = n^2 + n + 2.at n=33A014206
- Phi(n) + 5 | sigma(n + 5).at n=20A015784
- Numbers k such that phi(k) | sigma(k + 7).at n=56A015845
- Coordination sequence T3 for Zeolite Code OSI.at n=22A016432
- Cycle class sequence c(n) (the number of true cycles of length n in which a certain node is included) for zeolite MEP = Melanophlogite [Si46O92].qR starting with a T3 atom.at n=10A019155
- Number of balls in pyramid with base either a regular hexagon or a hexagon with alternate sides differing by 1 (balls in hexagonal pyramid of height n taken from hexagonal close-packing).at n=16A019298
- Numbers k such that the continued fraction for sqrt(k) has period 26.at n=18A020365
- n-th 4k+1 prime plus n-th 4k+3 prime.at n=51A022757
- Place where n-th 1 occurs in A007336.at n=39A022775