642335002 has 16 divisors (see below), whose sum is σ = 981267552. Its totient is φ = 315267120.

The previous prime is 642334999. The next prime is 642335003. The reversal of 642335002 is 200533246.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (642335003) by changing a digit.

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, 58773 + ... + 68839.

It is an arithmetic number, because the mean of its divisors is an integer number (61329222).

Almost surely, 2^642335002 is an apocalyptic number.

642335002 is a deficient number, since it is larger than the sum of its proper divisors (338932550).

642335002 is a wasteful number, since it uses less digits than its factorization.

642335002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10653.

The product of its (nonzero) digits is 4320, while the sum is 25.

The square root of 642335002 is about 25344.3287936374. The cubic root of 642335002 is about 862.8206476213.

Adding to 642335002 its reverse (200533246), we get a palindrome (842868248).

The spelling of 642335002 in words is "six hundred forty-two million, three hundred thirty-five thousand, two".