77887042 has 8 divisors (see below), whose sum is σ = 122979600. Its totient is φ = 36893844.

The previous prime is 77887027. The next prime is 77887079. The reversal of 77887042 is 24078877.

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

It is a self number, because there is not a number n which added to its sum of digits gives 77887042.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1024792 + ... + 1024867.

It is an arithmetic number, because the mean of its divisors is an integer number (15372450).

Almost surely, 2^77887042 is an apocalyptic number.

77887042 is a deficient number, since it is larger than the sum of its proper divisors (45092558).

77887042 is a wasteful number, since it uses less digits than its factorization.

77887042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2049680.

The product of its (nonzero) digits is 175616, while the sum is 43.

The square root of 77887042 is about 8825.3635619163. The cubic root of 77887042 is about 427.0595159708.

The spelling of 77887042 in words is "seventy-seven million, eight hundred eighty-seven thousand, forty-two".