77742146 has 8 divisors (see below), whose sum is σ = 116651664. Its totient is φ = 38858260.

The previous prime is 77742131. The next prime is 77742163. The reversal of 77742146 is 64124777.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5921 + ... + 13803.

It is an arithmetic number, because the mean of its divisors is an integer number (14581458).

Almost surely, 2^77742146 is an apocalyptic number.

77742146 is a deficient number, since it is larger than the sum of its proper divisors (38909518).

77742146 is a wasteful number, since it uses less digits than its factorization.

77742146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12816.

The product of its digits is 65856, while the sum is 38.

The square root of 77742146 is about 8817.1506735453. The cubic root of 77742146 is about 426.7945269740.

The spelling of 77742146 in words is "seventy-seven million, seven hundred forty-two thousand, one hundred forty-six".