521023242 has 32 divisors (see below), whose sum is σ = 1106307072. Its totient is φ = 163019264.

The previous prime is 521023219. The next prime is 521023253. The reversal of 521023242 is 242320125.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32398 + ... + 45734.

It is an arithmetic number, because the mean of its divisors is an integer number (34572096).

Almost surely, 2^521023242 is an apocalyptic number.

521023242 is an abundant number, since it is smaller than the sum of its proper divisors (585283830).

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

521023242 is a wasteful number, since it uses less digits than its factorization.

521023242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13742.

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

The square root of 521023242 is about 22825.9335406025. The cubic root of 521023242 is about 804.6722645159.

Adding to 521023242 its reverse (242320125), we get a palindrome (763343367).

The spelling of 521023242 in words is "five hundred twenty-one million, twenty-three thousand, two hundred forty-two".