Properties of the Number 42444

Forty-Two Thousand Four Hundred Forty-Four

Basics

Value: 42443 → 42444 → 42445

Parity: even

Prime: No

Previous Prime: 42443

Next Prime: 42451

Digit Sum: 18

Digital Root: 9

Palindrome: No

Factorization: 2 ² × 3 ⁴ × 131

Divisors: 1, 2, 3, 4, 6, 9, 12, 18, 27, 36

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: 1010010111001100

Octal: 122714

Duodecimal: 20690

Hexadecimal: a5cc

Square: 1801493136

Square Root: 206.01941656067274

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

Expansion of 1/(1 - x - x² + x⁵ - x⁷). A204631

Number of interior points that are the intersections of exactly two chords in the configuration A006561(n). A292104

Expansion of g.f. A(x,y) satisfying 0 = ∑_n=-oo..+oo xⁿ * A(x,y)ⁿ * (y - x^n-1)ⁿ⁺¹, as a triangle of coefficients T(n,k) of xⁿ*y^k in A(x,y), read by rows n >= 0. A366730

Numbers having four 4's in base 10. A43508

Numbers n such that n² is divisible by the sum of the distinct prime divisors of n² + 1. A196219

The number of interior points that are intersections of exactly two chords for a 2n-gon where all its vertices are joined by lines (cf. A006561). A352144

Central terms of triangle A366730. A366736

Numerators of continued fraction convergents to sqrt(750). A42444