522642 has 8 divisors (see below), whose sum is σ = 1045296. Its totient is φ = 174212.

The previous prime is 522637. The next prime is 522659. The reversal of 522642 is 246225.

It is a sphenic number, since it is the product of 3 distinct primes.

522642 is an admirable number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 522642.

It is an unprimeable number.

522642 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 in 3 ways as a sum of consecutive naturals, for example, 43548 + ... + 43559.

It is an arithmetic number, because the mean of its divisors is an integer number (130662).

2⁵²²⁶⁴² is an apocalyptic number.

522642 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

522642 is a wasteful number, since it uses less digits than its factorization.

522642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87112.

The product of its digits is 960, while the sum is 21.

The square root of 522642 is about 722.9398315213. The cubic root of 522642 is about 80.5504743701.

Adding to 522642 its reverse (246225), we get a palindrome (768867).

The spelling of 522642 in words is "five hundred twenty-two thousand, six hundred forty-two".