Properties of the Number 42950

Forty-Two Thousand Nine Hundred Fifty

Basics

Value: 42949 → 42950 → 42951

Parity: even

Prime: No

Previous Prime: 42943

Next Prime: 42953

Digit Sum: 20

Digital Root: 2

Palindrome: No

Factorization: 2 × 5 ² × 859

Divisors: 1, 2, 5, 10, 25, 50, 859, 1718, 4295, 8590

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 1010011111000110

Octal: 123706

Duodecimal: 20A32

Hexadecimal: a7c6

Square: 1844702500

Square Root: 207.24381776062705

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

Numbers that are the sum of 9 positive 9th powers. A3398

a(n) is the largest integer k such that there is an integer m with exactly n nonunitary prime factors and m + A005117(i) is squarefree for 1 <= i <= k. A390138

Number of positive integers <= 10ⁿ that are divisible by no prime exceeding 19. A108276

a(n) = ∑_d∣n A007955(d) * A000027(d) = ∑_d∣n A007955(d) * (d), where A007955(m) = product of divisors of m. A174933

Numbers k such that 8k+1, 12k+1 and 24k+1 are primes and the last two are also of the form x² + 27y², so the tetrahedral number T(24k+1) is a Fermat pseudoprime to base 2. A321867

Row sums of the Lucas triangle A029635. A42950

Rectangular array read by upwards antidiagonals: a(n,k) = index of largest term <= 10^k in row n of A253572, n >= 1, k >= 0. A253635

Integers k such that k² is of form y² + y + x² + x for positive y, x. A235375