Properties of the Number 19125

Nineteen Thousand One Hundred Twenty-Five

Basics

Value: 19124 → 19125 → 19126

Parity: odd

Prime: No

Previous Prime: 19121

Next Prime: 19139

Digit Sum: 18

Digital Root: 9

Palindrome: No

Factorization: 3 ² × 5 ³ × 17

Divisors: 1, 3, 5, 9, 15, 17, 25, 45, 51, 75

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: 100101010110101

Octal: 45265

Duodecimal: B099

Hexadecimal: 4ab5

Square: 365765625

Square Root: 138.2931668593933

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

Row 5 of A277710: Positions of 5's in A264977; positions of 10's in A277330. A277715

Sixth-order spt function. A221144

Main diagonal of A090806. A108469

a(n) = ∑_{k=0..floor(n/3)} binomial(3·n-2·k,n-3·k). A371754

Integers k such that nextprime(k⁵) - prevprime(k⁵) = 4. A90123

Numbers m such that m = p² + k², with p > 0, where p = A007954(m) = the product of digits of m. A334557

Nonsquarefree numbers k such that A003415(k) divides A276086(k), where A003415 is the arithmetic derivative, and A276086 is the primorial base exp-function. A371085

Number of bicentered 5-valent trees with n nodes. A36649

To obtain a(n+1), add the square of the n-th partial sum to the n-th partial sum of the squares, then divide this result by a(n), for all n >= 0, with a(0)=1. A88016

Number of ballot sequences of length n having exactly ten descents. A241803