Properties of the Number 42209

Forty-Two Thousand Two Hundred Nine

Basics

Value: 42208 → 42209 → 42210

Parity: odd

Prime: Yes

Previous Prime: 42197

Next Prime: 42221

Digit Sum: 17

Digital Root: 8

Palindrome: No

Factorization: 42209

Divisors: 1, 42209

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 1010010011100001

Octal: 122341

Duodecimal: 20515

Hexadecimal: a4e1

Square: 1781599681

Square Root: 205.44829033116824

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 p such that 1 + product of primes up to p is prime. A5234

Growth series for affine Coxeter group B₄. A267167

Class 7- primes. A81426

Prime numbers such that, in base 10, all their proper prefixes and suffixes represent composites. A254754

Number of 2 X 2 matrices having all terms in {1,...,n} and nonnegative determinant. A211058

Balanced primes of order one ending in 9. A303095

Primes of form a²+b² such that a⁴+b⁴ and a⁸+b⁸ are primes. A182313

Primes that can be constructed by concatenating two squares >= 4. A345314

Numerators of the determinant of matrix (M(n) - H(n)), where H(n) is the n-th Hilbert matrix and M(n) is an n X n matrix with i,j-th entry i+j-1. A61913

Primes from merging of 5 successive digits in decimal expansion of exp(2). A105001