642094875 has 48 divisors (see below), whose sum is σ = 1169150112. Its totient is φ = 339000000.

The previous prime is 642094867. The next prime is 642094931. The reversal of 642094875 is 578490246.

It is a happy number.

642094875 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 642094875 - 2³ = 642094867 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 642094875.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 110800 + ... + 116450.

It is an arithmetic number, because the mean of its divisors is an integer number (24357294).

Almost surely, 2^642094875 is an apocalyptic number.

642094875 is a deficient number, since it is larger than the sum of its proper divisors (527055237).

642094875 is a wasteful number, since it uses less digits than its factorization.

642094875 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5773 (or 5760 counting only the distinct ones).

The product of its (nonzero) digits is 483840, while the sum is 45.

The square root of 642094875 is about 25339.5910582630. The cubic root of 642094875 is about 862.7131168384.

The spelling of 642094875 in words is "six hundred forty-two million, ninety-four thousand, eight hundred seventy-five".