Properties of the Number 87143

Eighty-Seven Thousand One Hundred Forty-Three

Basics

Value: 87142 → 87143 → 87144

Parity: odd

Prime: No

Previous Prime: 87133

Next Prime: 87149

Digit Sum: 23

Digital Root: 5

Palindrome: No

Factorization: 7 × 59 × 211

Divisors: 1, 7, 59, 211, 413, 1477, 12449, 87143

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10101010001100111

Octal: 252147

Duodecimal: 4251B

Hexadecimal: 15467

Square: 7593902449

Square Root: 295.1999322493147

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

The number of paths of length 13·n from the origin to the line y = 2·x/11 with unit East and North steps that stay below the line or touch it. A300389

Antidiagonal sums of square table A086623. A86625

a(n) is the number of Dyck paths of semilength n without height of peaks 0 (mod 3) and height of valleys 1 (mod 3). A152172

Number of ordered triples (w,x,y) with all terms in {-n,...-1,1,...,n} and w+2x+2y>0. A211624

Irregular triangle T(n,k) read by rows: number of orbits of size 2^k on Dyck n-paths. A175137

Numbers n such that sum of digits of n is divisible by digital root of n. A87143