Properties of the Number 19427

Nineteen Thousand Four Hundred Twenty-Seven

Basics

Value: 19426 → 19427 → 19428

Parity: odd

Prime: Yes

Previous Prime: 19423

Next Prime: 19429

Digit Sum: 23

Digital Root: 5

Palindrome: No

Factorization: 19427

Divisors: 1, 19427

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: 100101111100011

Octal: 45743

Duodecimal: B2AB

Hexadecimal: 4be3

Square: 377408329

Square Root: 139.38077342302273

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

Absolute discriminants of complex quadratic fields with 3-class rank 2. A242862

a(0)=1; a(n) = 3ⁿ - 2^n-1 for n >= 1. A83313

G.f.: ∑_{n >= 1} xⁿ/(1-xⁿ)⁵. A73570

Primes p such that p - 6², p - 6, p + 6 and p + 6² are also primes. A141279

a(n) = number of n-digit base-3 biquams. A64686

Numbers which are primes and which remain prime for three successive applications of incrementing each digit by 2 with carries ignored. A88787

Table read by rows: list of prime 5-tuples of the form (p, p+4, p+6, p+10, p+12). A270999

Primes equal to a centered heptagonal number plus 1. A285811

Partial sums of A038580. A86749

Primes occurring in exactly three prime triples (p,q,r) with p<q<r=p+6. A98423