Properties of the Number -20135

Twenty Thousand One Hundred Thirty-Five

Basics

Value: -20136 → -20135 → -20134

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 11

Digital Root: 2

Palindrome: No

Factorization: 5 × 4027

Divisors: 1, 5, 4027, 20135

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -100111010100111

Octal: -47247

Duodecimal: -B79B

Hexadecimal: -4ea7

Square: 405418225

Square Root: 141.89785058273435

Classification

Fibonacci: No

Bell Number: No

Factorial Number: No

Regular Number: No

Perfect Number: No

Special

Kaprekar Constant: No

Munchausen Constant: No

Armstrong Number: No

Kaprekar Number: No

Catalan Number: No

Vampire Number: No

Taxicab Number: No

Super Prime: No

Friedman Number: No

Fermat Number: No

Cullen Number: No

OEIS Sequences

Number of integer compositions of n into parts that are alternately equal and unequal. A357643

Numbers k such that 6·k+1, 6·k+7, 6·k+13, 6·k+19 are consecutive primes. A90839

a(n) = number of compositions of n in which the maximum part size is 4. A102

a(n) = prime(n) * prime(n+2) - 2·prime(n+1). A152532

Number of palindromic Carlitz compositions of n. A239327

Number of nondecreasing arrangements of 5 numbers in -(n+3)..(n+3) with sum zero and not more than two numbers equal. A188238

Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 629", based on the 5-celled von Neumann neighborhood. A273297

a(1) = 1; a(n+1) = ∑_{d∣n, n/d odd} a(d)^n/d. A307780

First entry of the vector v(n), where v(0) is the 2 by 2 column vector [0,1], v(n)=(M(n-1)^n-1)v(n-1) and M(k) is the 2·2 matrix [[0,1],[1,k]]. A105065

Duplicate of A090839. A296055