634402342 has 8 divisors (see below), whose sum is σ = 1087546896. Its totient is φ = 271886712.

The previous prime is 634402319. The next prime is 634402361. The reversal of 634402342 is 243204436.

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

It is a self number, because there is not a number n which added to its sum of digits gives 634402342.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22657213 + ... + 22657240.

It is an arithmetic number, because the mean of its divisors is an integer number (135943362).

Almost surely, 2^634402342 is an apocalyptic number.

634402342 is a deficient number, since it is larger than the sum of its proper divisors (453144554).

634402342 is a wasteful number, since it uses less digits than its factorization.

634402342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45314462.

The product of its (nonzero) digits is 13824, while the sum is 28.

The square root of 634402342 is about 25187.3448779342. The cubic root of 634402342 is about 859.2540593258.

Adding to 634402342 its reverse (243204436), we get a palindrome (877606778).

The spelling of 634402342 in words is "six hundred thirty-four million, four hundred two thousand, three hundred forty-two".