Properties of the Number 42571

Forty-Two Thousand Five Hundred Seventy-One

Basics

Value: 42570 → 42571 → 42572

Parity: odd

Prime: Yes

Previous Prime: 42569

Next Prime: 42577

Digit Sum: 19

Digital Root: 1

Palindrome: No

Factorization: 42571

Divisors: 1, 42571

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 1010011001001011

Octal: 123113

Duodecimal: 20777

Hexadecimal: a64b

Square: 1812290041

Square Root: 206.32740971572343

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

a(n) = 1 + n*(n+1)*(n-1)/2. A158842

Upper twin primes of upper twin prime index. A88463

a(1) = 1, a(2) = 5, for n >= 3, a(n) = smallest prime > a(n-1) such that a(n) mod a(n-1) = a(n-2). A175207

Greater of twin primes p such that 3·p-2 is also greater of twin primes. A177336

Values of odd prime numbers, D, for incrementally largest values of minimal·satisfying the equation x² - D·y² = -2. A336790

Values of odd prime numbers, D, for incrementally largest values of minimal positive y satisfying the equation x² - D·y² = -2. A336792

a(n) = ∑_{k=0..floor((n-1)/4)} Stirling2(n,4·k+1). A365526

Second term of weak prime sextet: p(m)-p(m-1) < p(m+1)-p(m) < p(m+2)-p(m+1) < p(m+3)-p(m+2) < p(m+4)-p(m+3). A54829

Prime numbers p such that p - 2, p² - p - 1, p² - p + 1 are prime numbers. A274525

Primes of the form 6ⁿ-4ⁿ+11. A104151