Properties of the Number 8742

Eight Thousand Seven Hundred Forty-Two

Basics

Value: 8741 → 8742 → 8743

Parity: even

Prime: No

Previous Prime: 8741

Next Prime: 8747

Digit Sum: 21

Digital Root: 3

Palindrome: No

Factorization: 2 × 3 × 31 × 47

Divisors: 1, 2, 3, 6, 31, 47, 62, 93, 94, 141

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10001000100110

Octal: 21046

Duodecimal: 5086

Hexadecimal: 2226

Square: 76422564

Square Root: 93.4986630920464

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

Lengths of successive generations of the Kolakoski sequence A000002. A54352

Hexagonal matchstick numbers: a(n) = 3·n*(3·n+1). A45945

a(n) is the conjectured highest power of n which has no four identical digits in succession. A216065

Square array A(row,col) = ∑_k=0..row binomial(row,k)*(1+col+k)!, read by descending antidiagonals as A(0,0), A(0,1), A(1,0), A(0,2), A(1,1), A(2,0), ... A276588

Number of partitions of n into parts not of forms 4·k+2, 20·k, 10·k+5. A36026

Binomial triangle based on factorials. A76571

Expansion of f(q) * f(q⁵) / φ(-q²)² in powers of q where f(), φ() are Ramanujan θ functions. A145722

Number of colored integer partitions of n such that three colors are used and parts differ by size or by color. A327381

Expansion of e.g.f. 6·exp(x)/(1-x)⁴. A1341

a(n) = ∑_{k = 0..4} (n+k)! C(4,k). A1346