642332 has 6 divisors (see below), whose sum is σ = 1124088. Its totient is φ = 321164.

The previous prime is 642281. The next prime is 642359. The reversal of 642332 is 233246.

642332 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a d-powerful number, because it can be written as 6⁷ + 4⁹ + 3⁵ + 2¹³ + 3¹⁰ + 2¹⁵ .

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 642332.

It is an unprimeable number.

642332 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, 80288 + ... + 80295.

It is an arithmetic number, because the mean of its divisors is an integer number (187348).

2⁶⁴²³³² is an apocalyptic number.

It is an amenable number.

642332 is a deficient number, since it is larger than the sum of its proper divisors (481756).

642332 is a wasteful number, since it uses less digits than its factorization.

642332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160587 (or 160585 counting only the distinct ones).

The product of its digits is 864, while the sum is 20.

The square root of 642332 is about 801.4561747220. The cubic root of 642332 is about 86.2819303467.

Adding to 642332 its reverse (233246), we get a palindrome (875578).

The spelling of 642332 in words is "six hundred forty-two thousand, three hundred thirty-two".