Properties of the Number -7129

One Hundred Twenty-Nine

Basics

Value: -7130 → -7129 → -7128

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 19

Digital Root: 1

Palindrome: No

Factorization: 7129

Divisors: 1, 7129

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -1101111011001

Octal: -15731

Duodecimal: -4161

Hexadecimal: -1bd9

Square: 50822641

Square Root: 84.43340571124678

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

Numerators of a semi-convergent series leading to the first Stieltjes constant gamma₁. A262382

a(n) = numerator of harmonic number H(n) = ∑_i=1..n 1/i. A1008

Primes with first digit 7. A45713

Number of integer partitions of n with as many even parts as even conjugate parts. A350948

a(n) = (1/1 + 1/2 + ... + 1/n)*lcm{1,2,...,n}. A25529

Smallest number that requires n iterations of the unitary totient function (A047994) to reach 1. A3271

Primes p such that the multiplicative order of 2 modulo p is (p-1)/4. A1134

Primes p for which the period of reciprocal 1/p is (p-1)/12. A56217

Triangle read by rows: square of the lower triangular mean matrix. A27446

Primes p such that q-p = 22, where q is the next prime after p. A61779