Properties of the Number 43243

Forty-Three Thousand Two Hundred Forty-Three

Basics

Value: 43242 → 43243 → 43244

Parity: odd

Prime: No

Previous Prime: 43237

Next Prime: 43261

Digit Sum: 16

Digital Root: 7

Palindrome: No

Factorization: 83 × 521

Divisors: 1, 83, 521, 43243

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 1010100011101011

Octal: 124353

Duodecimal: 21037

Hexadecimal: a8eb

Square: 1869957049

Square Root: 207.94951310354156

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. satisfies: A(x) = 1 + x/A(-x·A(x)⁴). A213093

Permutation rooted trees with n nodes. A50383

a(n) = nⁿ - (n-1)^n-1 - (n-2)^n-2 - ... - 1. A173142

Let p = first digit of n, q = number obtained if p is removed from n; let r = last digit of n, s = number obtained if r is removed from n; sequence give n such that p·q = r·s ≠ 0, p! = q, and r! = s. A245364

Numbers in A245385 where P, Q, R, and S are all distinct. A245386

Fibonacci-x^x where·is largest integer such that x^x is smaller than Fibonacci. A174255

Numbers N such that N = P//Q = R//S, where // is the concatenation function, satisfying the following properties: P and S are m-digit integers, Q and R are k-digit integers, k and m are distinct positive integers, and P·Q = R·S. A245385

Square array A(n,k), n >= 0, k >= 0, read by antidiagonals downwards, where column k is the expansion of B(x)^k, where B(x) is the g.f. of A213093. A384866

Numbers k such that 3 and 7 occur juxtaposed in the base-10 representation of k but not of k-1. A43243