642232 has 8 divisors (see below), whose sum is σ = 1204200. Its totient is φ = 321112.

The previous prime is 642223. The next prime is 642233. The reversal of 642232 is 232246.

642232 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (642233) by changing a digit.

642232 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40132 + ... + 40147.

It is an arithmetic number, because the mean of its divisors is an integer number (150525).

2⁶⁴²²³² is an apocalyptic number.

It is an amenable number.

642232 is a deficient number, since it is larger than the sum of its proper divisors (561968).

642232 is a wasteful number, since it uses less digits than its factorization.

642232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80285 (or 80281 counting only the distinct ones).

The product of its digits is 576, while the sum is 19.

The square root of 642232 is about 801.3937858506. The cubic root of 642232 is about 86.2774525788.

Adding to 642232 its reverse (232246), we get a palindrome (874478).

The spelling of 642232 in words is "six hundred forty-two thousand, two hundred thirty-two".