Properties of the Number 42797

Forty-Two Thousand Seven Hundred Ninety-Seven

Basics

Value: 42796 → 42797 → 42798

Parity: odd

Prime: Yes

Previous Prime: 42793

Next Prime: 42821

Digit Sum: 29

Digital Root: 2

Palindrome: No

Factorization: 42797

Divisors: 1, 42797

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: 1010011100101101

Octal: 123455

Duodecimal: 20925

Hexadecimal: a72d

Square: 1831583209

Square Root: 206.87435800504613

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

Denominators of primes-only best approximates (POBAs) to the golden ratio, φ; see Comments. A265801

Denominator of lower primes-only best approximates (POBAs) to the golden ratio, φ (A001622); see Comments. A265797

Fibonacci sequence beginning 2 9. A22114

Numerators of primes-only best approximates (POBAs) to 1/(golden ratio) = 1/φ; see Comments. A265806

Lesser prime factor of successively better golden semiprimes. A165571

The Riemann primes of the ψ type and index 1. A197185

Intersection of A251964, A252280 and A252281. A252283

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

Primes occurring in A084704 exactly 4 times. A128655

Lesser of pseudo twin primes to base 2. A192297