642310248 has 32 divisors (see below), whose sum is σ = 1615068000. Its totient is φ = 212864448.

The previous prime is 642310217. The next prime is 642310261. The reversal of 642310248 is 842013246.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 73198 + ... + 81501.

It is an arithmetic number, because the mean of its divisors is an integer number (50470875).

Almost surely, 2^642310248 is an apocalyptic number.

It is an amenable number.

642310248 is an abundant number, since it is smaller than the sum of its proper divisors (972757752).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

642310248 is a wasteful number, since it uses less digits than its factorization.

642310248 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154881 (or 154877 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 30.

The square root of 642310248 is about 25343.8404351038. The cubic root of 642310248 is about 862.8095638220.

The spelling of 642310248 in words is "six hundred forty-two million, three hundred ten thousand, two hundred forty-eight".