642370000 has 50 divisors (see below), whose sum is σ = 1555266218. Its totient is φ = 256944000.

The previous prime is 642369983. The next prime is 642370019. The reversal of 642370000 is 73246.

It can be written as a sum of positive squares in 5 ways, for example, as 162409536 + 479960464 = 12744^2 + 21908^2 .

It is a tau number, because it is divible by the number of its divisors (50).

It is a congruent number.

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 9 ways as a sum of consecutive naturals, for example, 22119 + ... + 42118.

Almost surely, 2^642370000 is an apocalyptic number.

It is an amenable number.

642370000 is an abundant number, since it is smaller than the sum of its proper divisors (912896218).

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

642370000 is an equidigital number, since it uses as much as digits as its factorization.

642370000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64265 (or 64244 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 22.

The square root of 642370000 is about 25345.0192345557. The cubic root of 642370000 is about 862.8363177666.

The spelling of 642370000 in words is "six hundred forty-two million, three hundred seventy thousand".