Properties of the Number -42525

Forty-Two Thousand Five Hundred Twenty-Five

Basics

Value: -42526 → -42525 → -42524

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 18

Digital Root: 9

Palindrome: No

Factorization: 3 ⁵ × 5 ² × 7

Divisors: 1, 3, 5, 7, 9, 15, 21, 25, 27, 35

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -1010011000011101

Octal: -123035

Duodecimal: -20739

Hexadecimal: -a61d

Square: 1808375625

Square Root: 206.2159062730128

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

Triangle read by rows: numerators of coefficients of the Debye-type polynomial v_n used for asymptotic Airy-type expansions of Bessel functions of arbitrarily large order. A144622

Expansion of e.g.f. arctan(log(x+1) - arcsinh(x)). A13273

tanh(log(x+1)-arcsinh(x))=-1/2!*x²+3/3!*x³-6/4!*x⁴+15/5!*x⁵... A13277

An Alexander sequence for the knot 6_3. A99447

Triangle read by rows: row n is the expansion of xⁿ in terms of (x+k)!/x! for decreasing k. A213735

a(n) = sqrt(π/4)*2^A048881(2·n)*L(2·n) where L(s) = lim_t->s (t/2)!/((1-t)/2)!. A333306

Triangle of Stirling numbers of the second kind, S2(n,k), n >= 1, 1 <= k <= n. A8277

Triangle of Stirling numbers of 2nd kind, S(n,k), n >= 0, 0 <= k <= n. A48993

Stirling numbers of second kind S(2n,n). A7820

Reflected triangle of Stirling numbers of 2nd kind, S(n,n-k+1), n >= 1, 1 <= k <= n. A8278