642103930 has 64 divisors (see below), whose sum is σ = 1295336448. Its totient is φ = 227566080.

The previous prime is 642103909. The next prime is 642103937. The reversal of 642103930 is 39301246.

It is not an unprimeable number, because it can be changed into a prime (642103937) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 551529 + ... + 552691.

It is an arithmetic number, because the mean of its divisors is an integer number (20239632).

Almost surely, 2^642103930 is an apocalyptic number.

642103930 is an abundant number, since it is smaller than the sum of its proper divisors (653232518).

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

642103930 is a wasteful number, since it uses less digits than its factorization.

642103930 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1351.

The product of its (nonzero) digits is 3888, while the sum is 28.

The square root of 642103930 is about 25339.7697306033. The cubic root of 642103930 is about 862.7171722259.

The spelling of 642103930 in words is "six hundred forty-two million, one hundred three thousand, nine hundred thirty".