642570003 has 24 divisors (see below), whose sum is σ = 978868800. Its totient is φ = 421109928.

The previous prime is 642569971. The next prime is 642570011. The reversal of 642570003 is 300075246.

It is a happy number.

642570003 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 642570003 - 2⁵ = 642569971 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (642570013) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8073 + ... + 36746.

It is an arithmetic number, because the mean of its divisors is an integer number (40786200).

Almost surely, 2^642570003 is an apocalyptic number.

642570003 is a deficient number, since it is larger than the sum of its proper divisors (336298797).

642570003 is an equidigital number, since it uses as much as digits as its factorization.

642570003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44893 (or 44881 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 27.

The square root of 642570003 is about 25348.9645350653. The cubic root of 642570003 is about 862.9258569965.

The spelling of 642570003 in words is "six hundred forty-two million, five hundred seventy thousand, three".