78572242 has 8 divisors (see below), whose sum is σ = 134695296. Its totient is φ = 33673812.

The previous prime is 78572213. The next prime is 78572257. The reversal of 78572242 is 24227587.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2806138 + ... + 2806165.

It is an arithmetic number, because the mean of its divisors is an integer number (16836912).

Almost surely, 2^78572242 is an apocalyptic number.

78572242 is a deficient number, since it is larger than the sum of its proper divisors (56123054).

78572242 is a wasteful number, since it uses less digits than its factorization.

78572242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5612312.

The product of its digits is 62720, while the sum is 37.

The square root of 78572242 is about 8864.0984877200. The cubic root of 78572242 is about 428.3081928785.

The spelling of 78572242 in words is "seventy-eight million, five hundred seventy-two thousand, two hundred forty-two".