Properties of the Number 87124

Eighty-Seven Thousand One Hundred Twenty-Four

Basics

Value: 87123 → 87124 → 87125

Parity: even

Prime: No

Previous Prime: 87121

Next Prime: 87133

Digit Sum: 22

Digital Root: 4

Palindrome: No

Factorization: 2 ² × 23 × 947

Divisors: 1, 2, 4, 23, 46, 92, 947, 1894, 3788, 21781

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10101010001010100

Octal: 252124

Duodecimal: 42504

Hexadecimal: 15454

Square: 7590591376

Square Root: 295.16774891576483

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 k such that φ(4k-1) = σ(k). A67235

a(n) = Fibonacci(n) + Fibonacci(2n+1). A87124

G.f. satisfies A(x) = 1 + x·A(x)³ + x³*A(x)⁸. A228987