Properties of the Number 42023

Forty-Two Thousand Twenty-Three

Basics

Value: 42022 → 42023 → 42024

Parity: odd

Prime: Yes

Previous Prime: 42019

Next Prime: 42043

Digit Sum: 11

Digital Root: 2

Palindrome: No

Factorization: 42023

Divisors: 1, 42023

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

4823 Try Today's Challenge

Representations

Binary: 1010010000100111

Octal: 122047

Duodecimal: 2039B

Hexadecimal: a427

Square: 1765932529

Square Root: 204.99512189318068

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 of the form 8·k-1 such that 4·k-1 and 16·k-1 are also primes. A101792

Coefficient of·in minimal polynomial of the continued fraction [1ⁿ,sqrt(5),1,1,1,...], where 1ⁿ means n ones. A266706

Indices of primes in sequence defined by A(0) = 19, A(n) = 10·A(n-1) - 61 for n > 0. A102011

Cyclops Sophie-Germain primes. A183058

n written in fractional base 6/4. A24637

Cyclops primes p such that 2p+1 is also a Cyclops prime. A183059

Prime p such that sqrt(p+2) is semiprime (A001358). A257933

T(n,k) is an array read by rows, with n > 0 and k=1..4, where row n gives four prime numbers in increasing order with locations in right angles of each concentric square drawn on a distorted version of the Ulam spiral. A271725

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(535). A42023