Properties of the Number 42872

Forty-Two Thousand Eight Hundred Seventy-Two

Basics

Value: 42871 → 42872 → 42873

Parity: even

Prime: No

Previous Prime: 42863

Next Prime: 42899

Digit Sum: 23

Digital Root: 5

Palindrome: No

Factorization: 2 ³ × 23 × 233

Divisors: 1, 2, 4, 8, 23, 46, 92, 184, 233, 466

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 1010011101111000

Octal: 123570

Duodecimal: 20988

Hexadecimal: a778

Square: 1838008384

Square Root: 207.05554810243555

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 vertices in regular n-gon after 2 generations of mitosis. A349967

a(n) = 529·n² + 23. A158631

A(x) satisfies A005408(x) = A(x)/A(x²), A005408 = odd numbers. A173283

Composite and even n such that φ(n) * σ(n) is one less than a square. A15721

Numbers k such that the least term in the periodic part of the continued fraction for sqrt(k) is 18. A31696

a(n) is the total radius of gyration of all self-avoiding polygons of length 2n on the square lattice. A56621

Numerators of continued fraction convergents to sqrt(968). A42872

Constant term in the expansion of (1 + (1 + w) * (1 + x) * (1 + y) * (1 + z) + (1 + 1/w) * (1 + 1/x) * (1 + 1/y) * (1 + 1/z))ⁿ. A328809