642582 has 24 divisors (see below), whose sum is σ = 1441440. Its totient is φ = 206640.

The previous prime is 642581. The next prime is 642613. The reversal of 642582 is 285246.

642582 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 642582.

It is not an unprimeable number, because it can be changed into a prime (642581) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 94 + ... + 1137.

It is an arithmetic number, because the mean of its divisors is an integer number (60060).

2⁶⁴²⁵⁸² is an apocalyptic number.

642582 is an abundant number, since it is smaller than the sum of its proper divisors (798858).

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

642582 is a wasteful number, since it uses less digits than its factorization.

642582 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1268 (or 1265 counting only the distinct ones).

The product of its digits is 3840, while the sum is 27.

The square root of 642582 is about 801.6121256568. The cubic root of 642582 is about 86.2931227336.

The spelling of 642582 in words is "six hundred forty-two thousand, five hundred eighty-two".