521242 has 8 divisors (see below), whose sum is σ = 792000. Its totient is φ = 257244.

The previous prime is 521231. The next prime is 521243. The reversal of 521242 is 242125.

521242 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

521242 is a Rhonda number in base 14.

It is not an unprimeable number, because it can be changed into a prime (521243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1492 + ... + 1807.

It is an arithmetic number, because the mean of its divisors is an integer number (99000).

2⁵²¹²⁴² is an apocalyptic number.

521242 is a deficient number, since it is larger than the sum of its proper divisors (270758).

521242 is a wasteful number, since it uses less digits than its factorization.

521242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3380.

The product of its digits is 160, while the sum is 16.

The square root of 521242 is about 721.9709135415. The cubic root of 521242 is about 80.4784865932.

Adding to 521242 its reverse (242125), we get a palindrome (763367).

The spelling of 521242 in words is "five hundred twenty-one thousand, two hundred forty-two".