Properties of the Number -7142

One Hundred Forty-Two

Basics

Value: -7143 → -7142 → -7141

Parity: even

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 14

Digital Root: 5

Palindrome: No

Factorization: 2 × 3571

Divisors: 1, 2, 3571, 7142

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -1101111100110

Octal: -15746

Duodecimal: -4172

Hexadecimal: -1be6

Square: 51008164

Square Root: 84.5103543951864

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

a(n) = floor(n*φ¹⁷), where φ is the golden ratio, A001622. A4932

Fibonacci sequence beginning 2, 6. A22112

Number of partitions of n containing a clique of size 2. A183559

Number of normal linear λ terms of size n with no free variables. A262301

a(n) = floor(10⁵/n). A33427

Numbers k such that k⁴ contains a pandigital substring. A115934

a(n) is the numerator of the expected number of nodes of the tree representing the process of eliminating from n people a random group by tossing coins, and repeating this process recursively until a single loser is determined. A372424

Starts of runs of 3 consecutive integers that are all terms in A381581. A381583

Integers n that divide f(n), where f is the change-of-base function defined at A214969, using b = (golden ratio) and c=b². A214970

Number of times that the numerator of a sum generated from the set 1, 1/2, 1/3,..., 1/n is a Fibonacci number. A256220