Properties of the Number 42026

Forty-Two Thousand Twenty-Six

Basics

Value: 42025 → 42026 → 42027

Parity: even

Prime: No

Previous Prime: 42023

Next Prime: 42043

Digit Sum: 14

Digital Root: 5

Palindrome: No

Factorization: 2 × 21013

Divisors: 1, 2, 21013, 42026

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 1010010000101010

Octal: 122052

Duodecimal: 203A2

Hexadecimal: a42a

Square: 1766184676

Square Root: 205.00243900988104

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

G.f. A(x) satisfies ∑_n=-oo..+oo (xⁿ - A(x))ⁿ = ∑_n>=0 x^n². A370031

G.f. satisfies: A(x) = A(x² + 2·x³)/(1-x). A251581

Values of n such that A080221(n)=6; i.e., values of n such that n is divisible by the sum of digits of n when expressed in exactly 6 of the bases b=1...n. A271311

Numbers n²+1 such that (n-1)²+1 and (n+1)²+1 are prime. A217583

Array T(n,k) read by antidiagonals: T(n,k) is the number of [n,k]-triangulations in the plane that have reflection symmetry, n >= 0, k >= 0. A169809

Numerators of continued fraction convergents to sqrt(537). A42026