642536310 has 48 divisors (see below), whose sum is σ = 1669847184. Its totient is φ = 158161536.

The previous prime is 642536299. The next prime is 642536329. The reversal of 642536310 is 13635246.

642536310 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×642536310² = 825705819336832200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 58297 + ... + 68436.

It is an arithmetic number, because the mean of its divisors is an integer number (34788483).

Almost surely, 2^642536310 is an apocalyptic number.

642536310 is an abundant number, since it is smaller than the sum of its proper divisors (1027310874).

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

642536310 is a wasteful number, since it uses less digits than its factorization.

642536310 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126769 (or 126756 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 30.

The square root of 642536310 is about 25348.2999429942. The cubic root of 642536310 is about 862.9107742978.

The spelling of 642536310 in words is "six hundred forty-two million, five hundred thirty-six thousand, three hundred ten".