6112
domain: N
Properties
Digital Properties
- Digit Count
- 4
- Digit Sum
- 10
- Digital Root
- 1
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 2
Divisibility
- Divisor Count
- 12
- Divisor Sum
- 12096
- Proper Divisor Sum (Aliquot Sum)
- 5984
- 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
- 3040
- Möbius Function
- 0
- Radical
- 382
- Omega Function (Ω)
- 6
- 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
- yes
- 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
- 49
- 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
- Squares written in base 7.at n=45A002440
- a(n) = n^2 written backwards.at n=45A002942
- Sum of 2^n, ..., 2^(n+1) - 1.at n=6A010036
- a(n) = floor(n*(n-1)*(n-2)/13).at n=44A011895
- Even pentagonal numbers.at n=32A014633
- a(n)=(s(n)+4)/10, where s(n)=n-th base 10 palindrome that starts with 6.at n=33A043085
- Numbers having four 4's in base 6.at n=9A043388
- Pentagonal numbers with even index.at n=32A049452
- a(n) = A055993(n) - A034444(A056627(n)).at n=32A056630
- a(n) = (1/3!)*(n^3 + 24*n^2 + 107*n + 90), compare A059604.at n=26A059605
- Sequence of sums based on primes = 7 mod 8.at n=19A060108
- Table by antidiagonals of rows of sequences where each row is binomial transform of preceding row and row 1 is (1,2,1,2,1,2,1,2,...).at n=59A061298
- Number of 2 X 2 non-singular integer matrices with entries from {0,...,n}.at n=8A062801
- Pentagonal numbers not divisible by 10 whose reverse is a square.at n=4A066741
- Smallest multiple of n with initial digits that of the reversal of n, deleting the leading zeros wherever required.at n=15A074156
- Numbers k such that the product of the digits of k equals the number of divisors of k.at n=43A074312
- Expansion of (1-x)/(1-2*x^2+2*x^3).at n=16A078025
- Least nontrivial multiple of the n-th prime beginning with 6.at n=42A078290
- n^2 read backwards, for n = 51, 50, 49, ..., 1.at n=5A080334
- Multiples of 2 in which there is no common digit in successive terms.at n=25A083490