521304342 has 32 divisors (see below), whose sum is σ = 1124147808. Its totient is φ = 160210176.

The previous prime is 521304341. The next prime is 521304367. The reversal of 521304342 is 243403125.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (521304341) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 70828 + ... + 77840.

It is an arithmetic number, because the mean of its divisors is an integer number (35129619).

Almost surely, 2^521304342 is an apocalyptic number.

521304342 is an abundant number, since it is smaller than the sum of its proper divisors (602843466).

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

521304342 is a wasteful number, since it uses less digits than its factorization.

521304342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7984.

The product of its (nonzero) digits is 2880, while the sum is 24.

The square root of 521304342 is about 22832.0901802704. The cubic root of 521304342 is about 804.8169494930.

Adding to 521304342 its reverse (243403125), we get a palindrome (764707467).

The spelling of 521304342 in words is "five hundred twenty-one million, three hundred four thousand, three hundred forty-two".