Properties of the Number 42547

Forty-Two Thousand Five Hundred Forty-Seven

Basics

Value: 42546 → 42547 → 42548

Parity: odd

Prime: No

Previous Prime: 42533

Next Prime: 42557

Digit Sum: 22

Digital Root: 4

Palindrome: No

Factorization: 157 × 271

Divisors: 1, 157, 271, 42547

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 1010011000110011

Octal: 123063

Duodecimal: 20757

Hexadecimal: a633

Square: 1810247209

Square Root: 206.26924152669974

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 g.f. A(x) satisfying A(x)³ = A( x·A(x)²/(1 - A(x)) ). A372531

Expansion of g/(1 + x³*g), where g = 1+x·g³ is the g.f. of A001764. A387676

Numbers k such that the period of the continued fraction for sqrt(k) contains exactly 49 ones. A31817

Triangle read by rows: T(n,k) is the number of skew Dyck paths of semilength n and pyramid weight k. A129163

Denominators of continued fraction convergents to sqrt(802). A42547

G.f. A(x) satisfies: A(x) = ∑_n>=0 Series_Reversion( x/A(x)ⁿ )ⁿ. A298698

Number of nX4 0..1 arrays with every element equal to 0, 2, 3, 4, 5 or 8 king-move adjacent elements, with upper left element zero. A299362