76780042 has 8 divisors (see below), whose sum is σ = 115467300. Its totient is φ = 38290944.

The previous prime is 76780001. The next prime is 76780043. The reversal of 76780042 is 24008767.

It can be written as a sum of positive squares in 2 ways, for example, as 76055841 + 724201 = 8721^2 + 851^2 .

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

It is not an unprimeable number, because it can be changed into a prime (76780043) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 48567 + ... + 50122.

Almost surely, 2^76780042 is an apocalyptic number.

76780042 is a deficient number, since it is larger than the sum of its proper divisors (38687258).

76780042 is a wasteful number, since it uses less digits than its factorization.

76780042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99080.

The product of its (nonzero) digits is 18816, while the sum is 34.

The square root of 76780042 is about 8762.4221537198. The cubic root of 76780042 is about 425.0266041016.

The spelling of 76780042 in words is "seventy-six million, seven hundred eighty thousand, forty-two".