3242
domain: N
Properties
Digital Properties
- Digit Count
- 4
- Digit Sum
- 11
- Digital Root
- 2
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 3
Divisibility
- Divisor Count
- 4
- Divisor Sum
- 4866
- Proper Divisor Sum (Aliquot Sum)
- 1624
- 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
- 1620
- Möbius Function
- 1
- Radical
- 3242
- 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
- 30
- 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
- Numbers k such that phi(k) = phi(k+2).at n=46A001494
- Number of points on surface of cuboctahedron (or icosahedron): a(0) = 1; for n > 0, a(n) = 10n^2 + 2. Also coordination sequence for f.c.c. or A_3 or D_3 lattice.at n=18A005901
- Coordination sequence T2 for Zeolite Code CAS.at n=34A008064
- Coordination sequence T1 for Zeolite Code DOH.at n=35A008078
- Coordination sequence T3 for Zeolite Code GOO.at n=39A008113
- Coordination sequence T1 for Zeolite Code LTA and RHO.at n=45A008137
- Coordination sequence T1 for Zeolite Code MON.at n=35A008181
- Coordination sequence for diamond.at n=36A008253
- Coordination sequence T3 for Zeolite Code -PAR.at n=40A009857
- Coordination sequence for CaF2(2), Ca position.at n=36A009926
- a(0) = 1, a(n) = 40*n^2 + 2 for n>0.at n=9A010022
- Coordination sequence T2 for Zeolite Code TER.at n=38A016434
- Coordination sequence T5 for Zeolite Code TER.at n=38A016437
- Numbers k such that the continued fraction for sqrt(k) has period 11.at n=31A020350
- s(1)t(n) + s(2)t(n-1) + ... + s(k)t(n-k+1), where k = [ n/2 ], s = A000201 (lower Wythoff sequence), t = A001950 (upper Wythoff sequence).at n=19A025119
- a(n) = T(n,0) + T(n,1) + ... + T(n,[ n/2 ]), T given by A026681.at n=11A026689
- Decimal part of cube root of a(n) starts with 8: first term of runs.at n=13A034134
- Numbers n such that string 4,2 occurs in the base 10 representation of n but not of n-1.at n=35A044374
- Numbers n such that string 4,2 occurs in the base 10 representation of n but not of n+1.at n=35A044755
- Number of primes in the reduced residue system of n-th primorial number (=A002110(n)).at n=6A048862