1246
domain: N
Properties
Digital Properties
- Digit Count
- 4
- Digit Sum
- 13
- Digital Root
- 4
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 3
Divisibility
- Divisor Count
- 8
- Divisor Sum
- 2160
- Proper Divisor Sum (Aliquot Sum)
- 914
- 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
- 528
- Möbius Function
- -1
- Radical
- 1246
- 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
- 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
- Tenth column of quintinomial coefficients.at n=3A000575
- Numbers k such that 15*2^k - 1 is prime.at n=24A002237
- Number of non-neighborly combinatorial 3-manifolds.at n=3A005026
- Number of partitions of n in which no part occurs just once.at n=38A007690
- Coordination sequence T1 for Zeolite Code LTL.at n=26A008138
- Coordination sequence T6 for Zeolite Code MFS.at n=22A008178
- Numbers k such that phi(k) + 12 | sigma(k).at n=36A015805
- Expansion of 1/((1-x)*(1-6*x)*(1-7*x)).at n=3A016241
- Numbers k such that the continued fraction for sqrt(k) has period 28.at n=16A020367
- Fibonacci sequence beginning 0, 14.at n=11A022348
- Place where n-th 1 occurs in A023119.at n=30A022781
- Place where n-th 1 occurs in A023131.at n=29A022793
- Numbers with exactly 3 4's in base 5 expansion.at n=29A023740
- Position of 2*n^2 in A000404 (sums of 2 nonzero squares).at n=46A024517
- Least sum of 4 distinct nonzero squares in exactly n ways.at n=42A025417
- a(n) = greatest number in row n of A026098 that is not a positive power of 2.at n=34A026104
- Numbers whose base-5 representation has 3 fewer 0's than 4's.at n=22A031476
- 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 34.at n=9A031532
- Numbers k such that the period of the continued fraction for sqrt(k) contains exactly 12 ones.at n=40A031780
- Numbers k such that 19*2^k+1 is prime.at n=4A032359