77071942 has 32 divisors (see below), whose sum is σ = 127998720. Its totient is φ = 34642080.

The previous prime is 77071933. The next prime is 77071949. The reversal of 77071942 is 24917077.

It is a Smith number, since the sum of its digits (37) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77071949) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 142192 + ... + 142732.

It is an arithmetic number, because the mean of its divisors is an integer number (3999960).

Almost surely, 2^77071942 is an apocalyptic number.

77071942 is a deficient number, since it is larger than the sum of its proper divisors (50926778).

77071942 is a wasteful number, since it uses less digits than its factorization.

77071942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 748.

The product of its (nonzero) digits is 24696, while the sum is 37.

The square root of 77071942 is about 8779.0627062346. The cubic root of 77071942 is about 425.5645406592.

The spelling of 77071942 in words is "seventy-seven million, seventy-one thousand, nine hundred forty-two".