642433502 has 16 divisors (see below), whose sum is σ = 1044066672. Its totient is φ = 295290240.

The previous prime is 642433499. The next prime is 642433523. The reversal of 642433502 is 205334246.

642433502 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 218249 + ... + 221172.

It is an arithmetic number, because the mean of its divisors is an integer number (65254167).

Almost surely, 2^642433502 is an apocalyptic number.

642433502 is a deficient number, since it is larger than the sum of its proper divisors (401633170).

642433502 is a wasteful number, since it uses less digits than its factorization.

642433502 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 439483.

The product of its (nonzero) digits is 17280, while the sum is 29.

The square root of 642433502 is about 25346.2719546682. The cubic root of 642433502 is about 862.8647489545.

Adding to 642433502 its reverse (205334246), we get a palindrome (847767748).

The spelling of 642433502 in words is "six hundred forty-two million, four hundred thirty-three thousand, five hundred two".