Properties of the Number 42309

Forty-Two Thousand Three Hundred Nine

Basics

Value: 42308 → 42309 → 42310

Parity: odd

Prime: No

Previous Prime: 42307

Next Prime: 42323

Digit Sum: 18

Digital Root: 9

Palindrome: No

Factorization: 3 ³ × 1567

Divisors: 1, 3, 9, 27, 1567, 4701, 14103, 42309

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: 1010010101000101

Octal: 122505

Duodecimal: 20599

Hexadecimal: a545

Square: 1790051481

Square Root: 205.69151659706338

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) = ∑_y=1..n ∑_x=1..n floor((x^k + y^k)^1/k) with k = 2. A211791

Number of n-leaf binary trees that do not contain (()((()())((()())()))) as a subtree. A159771

G.f.: ∑_k>=0 x^k*(k+1/2) * ∏_j=1..k 1/(1 - x^j)⁴. A376710

Denominators of continued fraction convergents to sqrt(681). A42309