642324504 has 64 divisors (see below), whose sum is σ = 1656288000. Its totient is φ = 207482240.

The previous prime is 642324503. The next prime is 642324569. The reversal of 642324504 is 405423246.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (642324503) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 97342 + ... + 103730.

It is an arithmetic number, because the mean of its divisors is an integer number (25879500).

Almost surely, 2^642324504 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 642324504, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (828144000).

642324504 is an abundant number, since it is smaller than the sum of its proper divisors (1013963496).

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

642324504 is a wasteful number, since it uses less digits than its factorization.

642324504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6528 (or 6524 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 30.

The square root of 642324504 is about 25344.1216853139. The cubic root of 642324504 is about 862.8159470935.

The spelling of 642324504 in words is "six hundred forty-two million, three hundred twenty-four thousand, five hundred four".