Properties of the Number -642341

Six Hundred Forty-Two Thousand Three Hundred Forty-One

Basics

Value: -642342 → -642341 → -642340

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 20

Digital Root: 2

Palindrome: No

Factorization: 7 ² × 13109

Divisors: 1, 7, 49, 13109, 91763, 642341

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -10011100110100100101

Octal: -2346445

Duodecimal: -26B885

Hexadecimal: -9cd25

Square: 412601960281

Square Root: 801.4617894821936

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) = (1/(6·n)) * ∑_d∣n μ(n/d) * binomial(6·d,d). A346580

Fermat coefficients. A972