78804242 has 16 divisors (see below), whose sum is σ = 131697792. Its totient is φ = 35057520.

The previous prime is 78804227. The next prime is 78804247. The reversal of 78804242 is 24240887.

It is not an unprimeable number, because it can be changed into a prime (78804247) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37073 + ... + 39140.

It is an arithmetic number, because the mean of its divisors is an integer number (8231112).

Almost surely, 2^78804242 is an apocalyptic number.

78804242 is a deficient number, since it is larger than the sum of its proper divisors (52893550).

78804242 is a wasteful number, since it uses less digits than its factorization.

78804242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76273.

The product of its (nonzero) digits is 28672, while the sum is 35.

The square root of 78804242 is about 8877.1753390366. The cubic root of 78804242 is about 428.7293333798.

The spelling of 78804242 in words is "seventy-eight million, eight hundred four thousand, two hundred forty-two".