77030042 has 4 divisors (see below), whose sum is σ = 115545066. Its totient is φ = 38515020.

The previous prime is 77030027. The next prime is 77030069. The reversal of 77030042 is 24003077.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 39929761 + 37100281 = 6319^2 + 6091^2 .

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 as a sum of consecutive naturals, namely, 19257509 + ... + 19257512.

Almost surely, 2^77030042 is an apocalyptic number.

77030042 is a deficient number, since it is larger than the sum of its proper divisors (38515024).

77030042 is a wasteful number, since it uses less digits than its factorization.

77030042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38515023.

The product of its (nonzero) digits is 1176, while the sum is 23.

The square root of 77030042 is about 8776.6760222763. The cubic root of 77030042 is about 425.4874075891.

The spelling of 77030042 in words is "seventy-seven million, thirty thousand, forty-two".