Properties of the Number 42157

Forty-Two Thousand One Hundred Fifty-Seven

Basics

Value: 42156 → 42157 → 42158

Parity: odd

Prime: Yes

Previous Prime: 42139

Next Prime: 42169

Digit Sum: 19

Digital Root: 1

Palindrome: No

Factorization: 42157

Divisors: 1, 42157

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 1010010010101101

Octal: 122255

Duodecimal: 20491

Hexadecimal: a4ad

Square: 1777212649

Square Root: 205.32169880458324

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

Primes arising in A053782. A53872

Primes p such that 8·p²-2·p-1 divides Fibonacci(p). A159231

[ (4th elementary symmetric function of S(n))/(2nd elementary symmetric of S(n)) ], where S(n) = {3,4, ..., n+5}. A24194

Depression-type primes with five digits; from left to right digits decrease to and increase from the central digit. A157083

Denominators of continued fraction convergents to sqrt(603). A42157

Number of length 6+6 0..n arrays with every seven consecutive terms having the maximum of some two terms equal to the minimum of the remaining five terms. A250160