76742531 has 2 divisors, whose sum is σ = 76742532. Its totient is φ = 76742530.

The previous prime is 76742521. The next prime is 76742543. The reversal of 76742531 is 13524767.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-76742531 is a prime.

It is a super-2 number, since 2×76742531² = 11778832128571922, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 76742491 and 76742500.

It is not a weakly prime, because it can be changed into another prime (76742521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38371265 + 38371266.

It is an arithmetic number, because the mean of its divisors is an integer number (38371266).

Almost surely, 2^76742531 is an apocalyptic number.

76742531 is a deficient number, since it is larger than the sum of its proper divisors (1).

76742531 is an equidigital number, since it uses as much as digits as its factorization.

76742531 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 35280, while the sum is 35.

The square root of 76742531 is about 8760.2814452505. The cubic root of 76742531 is about 424.9573770404.

The spelling of 76742531 in words is "seventy-six million, seven hundred forty-two thousand, five hundred thirty-one".