642312326 has 24 divisors (see below), whose sum is σ = 1033509360. Its totient is φ = 299302272.

The previous prime is 642312289. The next prime is 642312331. The reversal of 642312326 is 623213246.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 54140 + ... + 64928.

It is an arithmetic number, because the mean of its divisors is an integer number (43062890).

Almost surely, 2^642312326 is an apocalyptic number.

642312326 is a deficient number, since it is larger than the sum of its proper divisors (391197034).

642312326 is a wasteful number, since it uses less digits than its factorization.

642312326 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10928 (or 10911 counting only the distinct ones).

The product of its digits is 10368, while the sum is 29.

The square root of 642312326 is about 25343.8814312252. The cubic root of 642312326 is about 862.8104942739.

The spelling of 642312326 in words is "six hundred forty-two million, three hundred twelve thousand, three hundred twenty-six".