522042251242 has 4 divisors (see below), whose sum is σ = 783063376866. Its totient is φ = 261021125620.

The previous prime is 522042251233. The next prime is 522042251267. The reversal of 522042251242 is 242152240225.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 518240172321 + 3802078921 = 719889^2 + 61661^2 .

It is a super-2 number, since 2×522042251242² (a number of 24 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 130510562809 + ... + 130510562812.

Almost surely, 2^522042251242 is an apocalyptic number.

522042251242 is a deficient number, since it is larger than the sum of its proper divisors (261021125624).

522042251242 is a wasteful number, since it uses less digits than its factorization.

522042251242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 261021125623.

The product of its (nonzero) digits is 25600, while the sum is 31.

Adding to 522042251242 its reverse (242152240225), we get a palindrome (764194491467).

The spelling of 522042251242 in words is "five hundred twenty-two billion, forty-two million, two hundred fifty-one thousand, two hundred forty-two".