Properties of the Number 42124

Forty-Two Thousand One Hundred Twenty-Four

Basics

Value: 42123 → 42124 → 42125

Parity: even

Prime: No

Previous Prime: 42101

Next Prime: 42131

Digit Sum: 13

Digital Root: 4

Palindrome: Yes

Factorization: 2 ² × 10531

Divisors: 1, 2, 4, 10531, 21062, 42124

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 1010010010001100

Octal: 122214

Duodecimal: 20464

Hexadecimal: a48c

Square: 1774431376

Square Root: 205.24132137559434

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

Palindromes of the form 3n + 1 where n is also a palindrome: palindromes arising in A083829. A83830

Minimal nested palindromic base-7 primes with seed 1; see Comments. A262657

Palindromic primes in base 5 (written in base 5). A117700

Terms of A083393 such that the sum of the factorials of the digits is prime. A83394

Main diagonal of array in A358298. A358301

Triangle read by rows: Coefficients of the polynomials SC(n, x) * EZ(n, x), where SC denote the Stirling cycle polynomials and EZ the Eulerian zig-zag polynomials A205497. A373427

Palindromic canyon numbers. A393015

Numbers k such that (23·10^k - 143)/3 is prime. A281167

Numerators of continued fraction convergents to sqrt(587). A42124

Base-10 representation of 1 and the primes at A262657. A262658