Properties of the Number 42542

Forty-Two Thousand Five Hundred Forty-Two

Basics

Value: 42541 → 42542 → 42543

Parity: even

Prime: No

Previous Prime: 42533

Next Prime: 42557

Digit Sum: 17

Digital Root: 8

Palindrome: No

Factorization: 2 × 89 × 239

Divisors: 1, 2, 89, 178, 239, 478, 21271, 42542

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 1010011000101110

Octal: 123056

Duodecimal: 20752

Hexadecimal: a62e

Square: 1809821764

Square Root: 206.2571210891881

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

Number of partitions of n having no parts with multiplicity 9. A184644

Number of increasing runs in all Carlitz compositions of n. A285994

a(n) = a(1) + a(2) + ... + a(n-1) - a(m) for n >= 4, where m = n - 1 - 2^p and p is the unique integer such that 2^p < n - 1 <= 2^p+1, starting with a(1) = 1 and a(2) = a(3) = 3. A49926

Numerators of continued fraction convergents to sqrt(800). A42542

Number of length n 1..(5+1) arrays with every leading partial sum divisible by 2, 3 or 5. A254824