77312542 has 8 divisors (see below), whose sum is σ = 116018136. Its totient is φ = 38639832.

The previous prime is 77312537. The next prime is 77312561. The reversal of 77312542 is 24521377.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1113 + ... + 12484.

It is an arithmetic number, because the mean of its divisors is an integer number (14502267).

Almost surely, 2^77312542 is an apocalyptic number.

77312542 is a deficient number, since it is larger than the sum of its proper divisors (38705594).

77312542 is a wasteful number, since it uses less digits than its factorization.

77312542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16442.

The product of its digits is 11760, while the sum is 31.

The square root of 77312542 is about 8792.7550858647. The cubic root of 77312542 is about 426.0069172395.

The spelling of 77312542 in words is "seventy-seven million, three hundred twelve thousand, five hundred forty-two".