Properties of the Number 42749

Forty-Two Thousand Seven Hundred Forty-Nine

Basics

Value: 42748 → 42749 → 42750

Parity: odd

Prime: No

Previous Prime: 42743

Next Prime: 42751

Digit Sum: 26

Digital Root: 8

Palindrome: No

Factorization: 7 × 31 × 197

Divisors: 1, 7, 31, 197, 217, 1379, 6107, 42749

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: 1010011011111101

Octal: 123375

Duodecimal: 208A5

Hexadecimal: a6fd

Square: 1827477001

Square Root: 206.7583130130443

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

Indices where A092243 strictly changes sign. A269737

Indices of records in A210693. A391871

a(n) = 1 + ∑_k=1..n ∑_d∣k μ(k/d)*p(d), where p(d) = number of partitions of d (A000041). A306912

Denominators of continued fraction convergents to sqrt(905). A42749