Properties of the Number 30742

Thirty Thousand Seven Hundred Forty-Two

Basics

Value: 30741 → 30742 → 30743

Parity: even

Prime: No

Previous Prime: 30727

Next Prime: 30757

Digit Sum: 16

Digital Root: 7

Palindrome: No

Factorization: 2 × 19 × 809

Divisors: 1, 2, 19, 38, 809, 1618, 15371, 30742

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 111100000010110

Octal: 74026

Duodecimal: 1595A

Hexadecimal: 7816

Square: 945070564

Square Root: 175.33396704574957

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(0)=1; thereafter a(n) = -2*∑_k=1..n binomial(2n,2k)*a(n-k). A210657

Numbers n > 1 such that n⁵ - 2 has no prime factor > n. A83955

Numerator of Euler(n,1/3). A156179

Alternating sum of centered heptagonal pyramidal numbers. A270694

a(n) = A365742(10ⁿ). A365748

Length of n-th run of composite numbers in A376198. A376763

Numbers k such that 89·10^k - 9 is prime. A287685

Expansion of exp( ∑_{n >= 1} A210657(n)*(-x)ⁿ/n ). A255882

a(n) = 4ⁿ*Euler(n, 1/4)*2^{valuation₂(n + 1}). A339058

Positions of record values in A030737. A30742