Properties of the Number -19421

Nineteen Thousand Four Hundred Twenty-One

Basics

Value: -19422 → -19421 → -19420

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 17

Digital Root: 8

Palindrome: No

Factorization: 19421

Divisors: 1, 19421

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -100101111011101

Octal: -45735

Duodecimal: -B2A5

Hexadecimal: -4bdd

Square: 377175241

Square Root: 139.35924798878617

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

Expansion of ∏_k>=1 1/(1 + x^k)^σ(k). A288421

Prime quadruples: numbers k such that k, k+2, k+6, k+8 are all prime. A7530

Initial members p of prime 5-tuples (p, p+2, p+6, p+8, p+12). A22006

Primes p such that three (the maximum number) primes occur between p and p+12. A86140

Primes p such that the polynomial x² + x + p generates only primes for x = 0, ..., 4. A187057

Number of rooted compound windmills (mobiles) of n nodes with no symmetries. A32171

Least prime of the form prime(n)² + k², or 0 if none. A240130

Prime numbers p such that x² + x + p produces primes for x = 0..4 but not x = 5. A210363

Addends k > 0 such that the polynomial x³ + x² + k produces a record of its Hardy-Littlewood Constant. A331950

Primes p such that (p, p+2, p+6, p+12) is a prime quadruple. A172454