Properties of the Number -643142

Six Hundred Forty-Three Thousand One Hundred Forty-Two

Basics

Value: -643143 → -643142 → -643141

Parity: even

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 20

Digital Root: 2

Palindrome: No

Factorization: 2 × 321571

Divisors: 1, 2, 321571, 643142

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

4938 Try Today's Challenge

Representations

Binary: -10011101000001000110

Octal: -2350106

Duodecimal: -270232

Hexadecimal: -9d046

Square: 413631632164

Square Root: 801.9613457018985

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

arctan(arctan(x)*sin(x))=2/2!*x²-12/4!*x⁴-50/6!*x⁶+12936/8!*x⁸... A12423

Numbers k such that k and k² use only the digits 1, 2, 3, 4 and 6. A136969