77012742 has 32 divisors (see below), whose sum is σ = 162708480. Its totient is φ = 24262560.

The previous prime is 77012729. The next prime is 77012779. The reversal of 77012742 is 24721077.

It is a congruent number.

It is an unprimeable number.

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 in 15 ways as a sum of consecutive naturals, for example, 3184 + ... + 12812.

It is an arithmetic number, because the mean of its divisors is an integer number (5084640).

Almost surely, 2^77012742 is an apocalyptic number.

77012742 is an abundant number, since it is smaller than the sum of its proper divisors (85695738).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

77012742 is a wasteful number, since it uses less digits than its factorization.

77012742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9708.

The product of its (nonzero) digits is 5488, while the sum is 30.

The square root of 77012742 is about 8775.6904001907. The cubic root of 77012742 is about 425.4555521247.

The spelling of 77012742 in words is "seventy-seven million, twelve thousand, seven hundred forty-two".