642530180 has 24 divisors (see below), whose sum is σ = 1392840960. Its totient is φ = 248721120.

The previous prime is 642530143. The next prime is 642530269. The reversal of 642530180 is 81035246.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 517550 + ... + 518789.

It is an arithmetic number, because the mean of its divisors is an integer number (58035040).

Almost surely, 2^642530180 is an apocalyptic number.

It is an amenable number.

642530180 is an abundant number, since it is smaller than the sum of its proper divisors (750310780).

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

642530180 is a wasteful number, since it uses less digits than its factorization.

642530180 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1036379 (or 1036377 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 29.

The square root of 642530180 is about 25348.1790272990. The cubic root of 642530180 is about 862.9080301417.

The spelling of 642530180 in words is "six hundred forty-two million, five hundred thirty thousand, one hundred eighty".