11842
domain: N
Properties
Digital Properties
- Digit Count
- 5
- Digit Sum
- 16
- Digital Root
- 7
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 3
Divisibility
- Divisor Count
- 8
- Divisor Sum
- 18432
- Proper Divisor Sum (Aliquot Sum)
- 6590
- Abundant Number
- no
- Perfect Number
- no
- Deficient Number
- yes
- Weird Number
- no
- Untouchable Number
- no
- Primitive Abundant
- no
Derived Values
- Euler's Totient
- 5700
- Möbius Function
- -1
- Radical
- 11842
- 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
- yes
- Harshad Number
- no
- Narcissistic Number
- no
- Collatz Steps
- 187
- 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
- Numbers n such that n*6^n - 1 is prime.at n=15A059675
- Product of n-th prime number and n-th composite number.at n=42A067563
- Binomial transform of A083579.at n=9A083580
- Number of configurations of the sliding block 8-puzzle that require a minimum of n moves to be reached, starting with the empty square in the center.at n=26A089474
- Numbers k such that k + prime(k) gives a triangular number.at n=41A115882
- Number of (n+3) X 5 binary arrays with every 4 X 4 subblock commuting with each horizontal and vertical neighbor 4 X 4 subblock.at n=14A188098
- Number of partitions of n not containing 2*(number of parts) as a part.at n=33A238488
- Number of partitions of n such that (number of distinct parts) > least part.at n=34A239951
- Numbers for which the cube of the sum of the digits is equal to the square of the product of their digits.at n=9A241846
- Numbers k such that (11*10^k - 113) / 3 is prime.at n=18A280557
- p-INVERT of (0,1,0,1,0,1,...), where p(S) = 1 - S - S^2 - S^3 + S^4.at n=12A291247
- Number of reversed integer partitions y of n with exactly one fixed point y(i) = i.at n=36A352832
- Number of multisets of positive integers whose right half (exclusive) sums to n.at n=23A360673
- Number of integer partitions of n whose length can be written as a nonnegative linear combination of the distinct parts.at n=34A367218