78676742 has 4 divisors (see below), whose sum is σ = 118015116. Its totient is φ = 39338370.

The previous prime is 78676727. The next prime is 78676747. The reversal of 78676742 is 24767687.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78676747) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19669184 + ... + 19669187.

It is an arithmetic number, because the mean of its divisors is an integer number (29503779).

Almost surely, 2^78676742 is an apocalyptic number.

78676742 is a deficient number, since it is larger than the sum of its proper divisors (39338374).

78676742 is a wasteful number, since it uses less digits than its factorization.

78676742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39338373.

The product of its digits is 790272, while the sum is 47.

The square root of 78676742 is about 8869.9910935694. The cubic root of 78676742 is about 428.4979900938.

The spelling of 78676742 in words is "seventy-eight million, six hundred seventy-six thousand, seven hundred forty-two".