521422112151242 has 8 divisors (see below), whose sum is σ = 782134876670916. Its totient is φ = 260710486594272.

The previous prime is 521422112151217. The next prime is 521422112151247. The reversal of 521422112151242 is 242151211224125.

It can be written as a sum of positive squares in 2 ways, for example, as 521412974511961 + 9137639281 = 22834469^2 + 95591^2 .

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

It is not an unprimeable number, because it can be changed into a prime (521422112151247) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 283595243 + ... + 285427934.

Almost surely, 2^{521422112151242} is an apocalyptic number.

521422112151242 is a deficient number, since it is larger than the sum of its proper divisors (260712764519674).

521422112151242 is a wasteful number, since it uses less digits than its factorization.

521422112151242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 569481352.

The product of its digits is 25600, while the sum is 35.

Adding to 521422112151242 its reverse (242151211224125), we get a palindrome (763573323375367).

The spelling of 521422112151242 in words is "five hundred twenty-one trillion, four hundred twenty-two billion, one hundred twelve million, one hundred fifty-one thousand, two hundred forty-two".