642324 has 12 divisors (see below), whose sum is σ = 1498784. Its totient is φ = 214104.

The previous prime is 642281. The next prime is 642359. The reversal of 642324 is 423246.

It is a tau number, because it is divible by the number of its divisors (12).

It is a nude number because it is divisible by every one of its digits.

It is a self number, because there is not a number n which added to its sum of digits gives 642324.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 642324.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26752 + ... + 26775.

2⁶⁴²³²⁴ is an apocalyptic number.

It is an amenable number.

642324 is an abundant number, since it is smaller than the sum of its proper divisors (856460).

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

642324 is a wasteful number, since it uses less digits than its factorization.

642324 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53534 (or 53532 counting only the distinct ones).

The product of its digits is 1152, while the sum is 21.

The square root of 642324 is about 801.4511837910. The cubic root of 642324 is about 86.2815721424.

The spelling of 642324 in words is "six hundred forty-two thousand, three hundred twenty-four".