76142639 has 2 divisors, whose sum is σ = 76142640. Its totient is φ = 76142638.

The previous prime is 76142629. The next prime is 76142641. The reversal of 76142639 is 93624167.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-76142639 is a prime.

Together with 76142641, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (76142629) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38071319 + 38071320.

It is an arithmetic number, because the mean of its divisors is an integer number (38071320).

Almost surely, 2^76142639 is an apocalyptic number.

76142639 is a deficient number, since it is larger than the sum of its proper divisors (1).

76142639 is an equidigital number, since it uses as much as digits as its factorization.

76142639 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 54432, while the sum is 38.

The square root of 76142639 is about 8725.9749598541. The cubic root of 76142639 is about 423.8471900240.

The spelling of 76142639 in words is "seventy-six million, one hundred forty-two thousand, six hundred thirty-nine".