Properties of the Number -42155

Forty-Two Thousand One Hundred Fifty-Five

Basics

Value: -42156 → -42155 → -42154

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 17

Digital Root: 8

Palindrome: No

Factorization: 5 × 8431

Divisors: 1, 5, 8431, 42155

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: -1010010010101011

Octal: -122253

Duodecimal: -2048B

Hexadecimal: -a4ab

Square: 1777044025

Square Root: 205.31682834098135

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

G.f. A(x) satisfies A(A(A(x))) = x+3·x²+9·x³. A220288

The number of odd numbers that require n Collatz (3x+1) iterations to reach 1. A176866