Properties of the Number 42404

Forty-Two Thousand Four Hundred Four

Basics

Value: 42403 → 42404 → 42405

Parity: even

Prime: No

Previous Prime: 42403

Next Prime: 42407

Digit Sum: 14

Digital Root: 5

Palindrome: No

Factorization: 2 ² × 10601

Divisors: 1, 2, 4, 10601, 21202, 42404

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 1010010110100100

Octal: 122644

Duodecimal: 20658

Hexadecimal: a5a4

Square: 1798099216

Square Root: 205.92231544929754

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 alternating compositions, i.e., compositions with alternating increases and decreases, starting with either an increase or a decrease. A25047

Numbers n such that 6·10ⁿ + 3·R_n - 2 is prime, where R_n = 11...1 is the repunit (A002275) of length n. A103032

n written in fractional base 6/4. A24637

Number of right triangles on a (n+1)X7 grid. A189811

Triangular array read by rows: row n shows the coefficients of the polynomial u(n) = c(0) + c(1)*x + ... + c(n)*xⁿ which is the numerator of the n-th convergent of the continued fraction [k, k, k, ... ], where k = (x + 1)/(x + 2). A231774

Numerators of continued fraction convergents to sqrt(730). A42404

Number of (n+1) X 2 0..3 arrays with column and row pair sums b(i,j)=a(i,j)+a(i,j-1) and c(i,j)=a(i,j)+a(i-1,j) such that rows of b(i,j) and columns of c(i,j) are lexicographically nondecreasing. A203780