Properties of the Number 42345

Forty-Two Thousand Three Hundred Forty-Five

Basics

Value: 42344 → 42345 → 42346

Parity: odd

Prime: No

Previous Prime: 42337

Next Prime: 42349

Digit Sum: 18

Digital Root: 9

Palindrome: No

Factorization: 3 ² × 5 × 941

Divisors: 1, 3, 5, 9, 15, 45, 941, 2823, 4705, 8469

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 1010010101101001

Octal: 122551

Duodecimal: 20609

Hexadecimal: a569

Square: 1793099025

Square Root: 205.7790076757102

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

T(n,k)=Number of (n+2)X(k+2) 0..3 arrays with every 3X3 subblock row and column sum not equal to 0 3 5 6 or 8 and every 3X3 diagonal and antidiagonal sum equal to 0 3 5 6 or 8. A252352

Numbers n with ω(n) = ω of 3 nearest larger and 3 nearest smaller neighbors. A101936

Number of (n+2)X(3+2) 0..3 arrays with every 3X3 subblock row and column sum not equal to 0 3 5 6 or 8 and every 3X3 diagonal and antidiagonal sum equal to 0 3 5 6 or 8. A252347

Number of (n+2)X(5+2) 0..3 arrays with every 3X3 subblock row and column sum not equal to 0 3 5 6 or 8 and every 3X3 diagonal and antidiagonal sum equal to 0 3 5 6 or 8. A252349

Denominators of continued fraction convergents to sqrt(699). A42345