Properties of the Number 42147

Forty-Two Thousand One Hundred Forty-Seven

Basics

Value: 42146 → 42147 → 42148

Parity: odd

Prime: No

Previous Prime: 42139

Next Prime: 42157

Digit Sum: 18

Digital Root: 9

Palindrome: No

Factorization: 3 ³ × 7 × 223

Divisors: 1, 3, 7, 9, 21, 27, 63, 189, 223, 669

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 1010010010100011

Octal: 122243

Duodecimal: 20483

Hexadecimal: a4a3

Square: 1776369609

Square Root: 205.2973453311075

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 that are the sum of seven fourth powers in exactly eight ways. A345830

Number of 2 X 2 matrices having all elements in {0,1,...,n} and determinant in the open interval (-n,n). A211032

Numbers n such that (6k-1) for k=n, n+1, n+2, n+3 are all primes with no primes of the form (6k+1) in between. A296011

Integers n such that 10ⁿ + 5ⁿ + 2ⁿ is a prime. A276741

Denominators of continued fraction convergents to sqrt(598). A42147

Number of nX4 0..1 arrays with no 1 equal to more than three of its horizontal, diagonal and antidiagonal neighbors, with the exception of exactly two elements. A284071