642030865652 has 120 divisors (see below), whose sum is σ = 1276791516000. Its totient is φ = 282309572160.

The previous prime is 642030865583. The next prime is 642030865703. The reversal of 642030865652 is 256568030246.

It is a junction number, because it is equal to n+sod(n) for n = 642030865597 and 642030865606.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 274488299 + ... + 274490637.

It is an arithmetic number, because the mean of its divisors is an integer number (10639929300).

Almost surely, 2^642030865652 is an apocalyptic number.

It is an amenable number.

642030865652 is a deficient number, since it is larger than the sum of its proper divisors (634760650348).

642030865652 is a wasteful number, since it uses less digits than its factorization.

642030865652 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2539 (or 2504 counting only the distinct ones).

The product of its (nonzero) digits is 2073600, while the sum is 47.

Adding to 642030865652 its reverse (256568030246), we get a palindrome (898598895898).

The spelling of 642030865652 in words is "six hundred forty-two billion, thirty million, eight hundred sixty-five thousand, six hundred fifty-two".