Properties of the Number 40421

Forty Thousand Four Hundred Twenty-One

Basics

Value: 40420 → 40421 → 40422

Parity: odd

Prime: No

Previous Prime: 40387

Next Prime: 40423

Digit Sum: 11

Digital Root: 2

Palindrome: No

Factorization: 83 × 487

Divisors: 1, 83, 487, 40421

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: 1001110111100101

Octal: 116745

Duodecimal: 1B485

Hexadecimal: 9de5

Square: 1633857241

Square Root: 201.0497450881249

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 integer partitions of n containing all prime indices of their parts. A324753

Euler transform of 2^floor(n/2), (A016116). A358369

Number of bifurcating nodes at generation n in the binary tree of persistently squarefree numbers (see A293230). A293522

a(n) = ∑_{k=0..floor(n/2)} (k+1) * binomial(2·k,2·n-4·k). A382300

Expansion of 1/(x^k*(1-x-2·x^k+1)) for k=9. A143452

Expansion of 1/(-x¹¹ + x¹⁰ + 2·x⁷ - x⁶ - x⁵ - x⁴ - x² + 2·x + 1). A157748

Continued fraction for sqrt(443). A40421