Properties of the Number 42489

Forty-Two Thousand Four Hundred Eighty-Nine

Basics

Value: 42488 → 42489 → 42490

Parity: odd

Prime: No

Previous Prime: 42487

Next Prime: 42491

Digit Sum: 27

Digital Root: 9

Palindrome: No

Factorization: 3 ² × 4721

Divisors: 1, 3, 9, 4721, 14163, 42489

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 1010010111111001

Octal: 122771

Duodecimal: 20709

Hexadecimal: a5f9

Square: 1805315121

Square Root: 206.1286006356226

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 A(x) = [ ∑_n>=0 2^n*(n-1/2) * (1 + 2^2·n+1)/3·x^n*(n+1/2) ]^1/3. A370016

A (1,1) Somos-4 sequence. A174017

A (1,1) Somos-4 sequence. A178081

Sum{T(n-k,k)}, 0<=k<=[ n/2 ], where T is the array in A026386. A26397

Number of walks within N³ (the first octant of Z³) starting at (0,0,0) and consisting of n steps taken from {(-1, 0, 0), (0, 0, 1), (1, -1, 0), (1, 1, -1), (1, 1, 0)}. A150609

Expansion of A(x) = ∑_n>=0 2^n*(n-1/2) * (1 + 2^2·n+1)/3·x^n*(n+1/2). A370015

Denominators of continued fraction convergents to sqrt(772). A42489