Properties of the Number -128787

One Hundred Twenty-Eight Thousand Seven Hundred Eighty-Seven

Basics

Value: -128788 → -128787 → -128786

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 33

Digital Root: 6

Palindrome: No

Factorization: 3 × 42929

Divisors: 1, 3, 42929, 128787

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -11111011100010011

Octal: -373423

Duodecimal: -62643

Hexadecimal: -1f713

Square: 16586091369

Square Root: 358.8690568995884

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

Numbers n such that 3ⁿ + 2^n-1 is prime. A82103

Integers j not of form 3m+2 such that for any integer k > 0, j·10^k+1 has a divisor in the set { 7, 11, 13, 37 }. A243969

Number of achiral polyominoes in {4,5} tessellation of the hyperbolic plane. A390193