521010242 has 8 divisors (see below), whose sum is σ = 806725632. Its totient is φ = 252101700.

The previous prime is 521010233. The next prime is 521010253. The reversal of 521010242 is 242010125.

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

It is a self number, because there is not a number n which added to its sum of digits gives 521010242.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4201634 + ... + 4201757.

It is an arithmetic number, because the mean of its divisors is an integer number (100840704).

Almost surely, 2^521010242 is an apocalyptic number.

521010242 is a deficient number, since it is larger than the sum of its proper divisors (285715390).

521010242 is a wasteful number, since it uses less digits than its factorization.

521010242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8403424.

The product of its (nonzero) digits is 160, while the sum is 17.

The square root of 521010242 is about 22825.6487750075. The cubic root of 521010242 is about 804.6655720272.

Adding to 521010242 its reverse (242010125), we get a palindrome (763020367).

The spelling of 521010242 in words is "five hundred twenty-one million, ten thousand, two hundred forty-two".