Properties of the Number 42851

Forty-Two Thousand Eight Hundred Fifty-One

Basics

Value: 42850 → 42851 → 42852

Parity: odd

Prime: No

Previous Prime: 42841

Next Prime: 42853

Digit Sum: 20

Digital Root: 2

Palindrome: No

Factorization: 73 × 587

Divisors: 1, 73, 587, 42851

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: 1010011101100011

Octal: 123543

Duodecimal: 2096B

Hexadecimal: a763

Square: 1836208201

Square Root: 207.0048308615043

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

A self-"read and extend" sequence built following the rules visible in the Comments section (a kind of Collatz-by-digits sequence). A316764

a(n) = s(n,n) + s(n,n-1) + s(n,n-2), where s(n,k) are the unsigned Stirling numbers of the first kind (see A132393). A308305

Numbers that equal to the sum of their iterated absolute Möbius divisor function (A173557). A333873

Denominators of continued fraction convergents to sqrt(956). A42851