Properties of the Number 42321

Forty-Two Thousand Three Hundred Twenty-One

Basics

Value: 42320 → 42321 → 42322

Parity: odd

Prime: No

Previous Prime: 42307

Next Prime: 42323

Digit Sum: 12

Digital Root: 3

Palindrome: No

Factorization: 3 × 14107

Divisors: 1, 3, 14107, 42321

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 1010010101010001

Octal: 122521

Duodecimal: 205A9

Hexadecimal: a551

Square: 1791067041

Square Root: 205.7206844242941

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

Number of subsets of {1..n} containing all of their integer quotients. A326023

T(n,k)=Number of nXk 0..1 arrays with every element equal to 0, 2, 3, 4, 5 or 8 king-move adjacent elements, with upper left element zero. A299366

a(n) = 80·n² + 1. A158776

Numerator of Hermite(n, 3/16). A159522

Semiprimes of the form 5·n² + 1. A212707

Number of nX3 0..1 arrays with every element equal to 0, 2, 3, 4, 5 or 8 king-move adjacent elements, with upper left element zero. A299361

Denominators of continued fraction convergents to sqrt(687). A42321

Number of (binary) heaps with element set [n] and length n+1. A373496

Number of (binary) heaps of length n whose element set equals {1,2,3,4}. A376963