Properties of the Number 42481

Forty-Two Thousand Four Hundred Eighty-One

Basics

Value: 42480 → 42481 → 42482

Parity: odd

Prime: No

Previous Prime: 42473

Next Prime: 42487

Digit Sum: 19

Digital Root: 1

Palindrome: No

Factorization: 23 × 1847

Divisors: 1, 23, 1847, 42481

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 1010010111110001

Octal: 122761

Duodecimal: 20701

Hexadecimal: a5f1

Square: 1804635361

Square Root: 206.10919436065922

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

Tetrahedral numbers written backwards. A4161

a(n) = n successive applications of the <*>(3,2) operator to 1. A227097

a(n) = prime(n)*(prime(n + 1) + 1) - (n³ + sum of digits of n³). A123139

The 4 X 4 Fibonacci/ anti-Fibonacci game switched modulo 2 with its dual: MA1={{0,1},{1,1}};MB1={{0,1}{1,3}}; MA2={{0,1},1,3}};MB2={{1,0},{1,1}}; the game has two characteristic polynomials: (-3 + 5 x - 3 x³ + x⁴, -1 + x + 2 x² - 3 x³ + x⁴}. A134035

Denominators of continued fraction convergents to sqrt(768). A42481

G.f. satisfies: A(x) = 1 + x·A(x)³ - 2·x²*A(x)² + x³*A(x). A200030