Properties of the Number 19121

Nineteen Thousand One Hundred Twenty-One

Basics

Value: 19120 → 19121 → 19122

Parity: odd

Prime: Yes

Previous Prime: 19087

Next Prime: 19139

Digit Sum: 14

Digital Root: 5

Palindrome: No

Factorization: 19121

Divisors: 1, 19121

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 100101010110001

Octal: 45261

Duodecimal: B095

Hexadecimal: 4ab1

Square: 365612641

Square Root: 138.27870407260838

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

Primes having only {1, 2, 9} as digits. A385776

Numbers k such that the continued fraction for sqrt(k) has odd period and if the last term of the periodic part is deleted then there are a pair of central terms both equal to 10. A31423

Primes of form n² + 625. A256777

Primes p such that the next prime after p can be obtained from p by adding the product of the digits of p. A89823

Primes p of the form 4·k+1 for which s=26 is the least positive integer such that s·p-(floor(sqrt(s·p)))² is a square. A145050

a(n) = 12·n² + 22·n + 11. A154106

Prime numbers, isolated from neighboring primes by >14. A137874

Prime numbers, isolated from neighboring primes by >16. A137875

Primes which are the sum of two numbers of the form k*(k+1)²/2. A210646

Primes of the form prime(n) + n + n². A267421