Properties of the Number 42438

Forty-Two Thousand Four Hundred Thirty-Eight

Basics

Value: 42437 → 42438 → 42439

Parity: even

Prime: No

Previous Prime: 42437

Next Prime: 42443

Digit Sum: 21

Digital Root: 3

Palindrome: No

Factorization: 2 × 3 × 11 × 643

Divisors: 1, 2, 3, 6, 11, 22, 33, 66, 643, 1286

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: 1010010111000110

Octal: 122706

Duodecimal: 20686

Hexadecimal: a5c6

Square: 1800983844

Square Root: 206.00485431173703

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

Numbers that are the sum of 8 positive 9th powers. A3397

Expansion of ∏_m>=1 (1+q^m)^-6. A22601

Number of function calls required to compute ack(3,n), where ack denotes the Ackermann function. A74877

McKay-Thompson series of class 16a for the Monster group. A112150

McKay-Thompson series of class 8b for Monster. A58088

Numbers k such that k and k+1 are both divisible by the total binary weight of their divisors (A093653). A338514

Expansion of χ(x⁵)⁶ + x * χ(x)⁶ in powers of·where χ() is a Ramanujan θ function. A240948

Starting positions of strings of three 3's in the decimal expansion of π. A83610

Numbers k such that Bernoulli number B_k has denominator 64722. A295592

Numerators of continued fraction convergents to sqrt(747). A42438