Properties of the Number 42398

Forty-Two Thousand Three Hundred Ninety-Eight

Basics

Value: 42397 → 42398 → 42399

Parity: even

Prime: No

Previous Prime: 42397

Next Prime: 42403

Digit Sum: 26

Digital Root: 8

Palindrome: No

Factorization: 2 × 17 × 29 × 43

Divisors: 1, 2, 17, 29, 34, 43, 58, 86, 493, 731

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 1010010110011110

Octal: 122636

Duodecimal: 20652

Hexadecimal: a59e

Square: 1797590404

Square Root: 205.90774633315766

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

Position of first appearance of each integer in A088568 (number of 1's minus number of 2's in first n terms of A000002). A288605

a(n) = A026637(2·n, n-2). A26640

Least k such that the first k terms of the Kolakoski sequence (A000002) contain n more 2's than 1's. A25503

a(n) = index where A088568 (or equally A294448) first reaches or exceeds n in magnitude. A294449

Numerators of continued fraction convergents to sqrt(726). A42398