Properties of the Number -42777

Forty-Two Thousand Seven Hundred Seventy-Seven

Basics

Value: -42778 → -42777 → -42776

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 27

Digital Root: 9

Palindrome: No

Factorization: 3 ² × 7 ² × 97

Divisors: 1, 3, 7, 9, 21, 49, 63, 97, 147, 291

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -1010011100011001

Octal: -123431

Duodecimal: -20909

Hexadecimal: -a719

Square: 1829871729

Square Root: 206.8260138377182

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

Expansion of f(-x, -x⁵)² / f(x, x³) in powers of·where f(, ) is Ramanujan's general θ function. A263041

Number of unlabeled rooted trees with n nodes in which the non-leaf branches directly under any given node are all equal. A320222

Non-palindromic numbers n such that φ(n) = φ(reversal(n)). A97647

Expansion of e.g.f. 1 / (1 - (exp(x) - 1)⁵ / 5!). A346920

a(n) = 97·n². A174338

a(n) = floor(n^3/2)*floor(3+n^3/2)/2. A185593