634385242 has 16 divisors (see below), whose sum is σ = 966945312. Its totient is φ = 312109200.

The previous prime is 634385221. The next prime is 634385261. The reversal of 634385242 is 242583436.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23293 + ... + 42559.

It is an arithmetic number, because the mean of its divisors is an integer number (60434082).

Almost surely, 2^634385242 is an apocalyptic number.

634385242 is a deficient number, since it is larger than the sum of its proper divisors (332560070).

634385242 is a wasteful number, since it uses less digits than its factorization.

634385242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19533.

The product of its digits is 138240, while the sum is 37.

The square root of 634385242 is about 25187.0054194618. The cubic root of 634385242 is about 859.2463390010.

The spelling of 634385242 in words is "six hundred thirty-four million, three hundred eighty-five thousand, two hundred forty-two".