202132121242 has 8 divisors (see below), whose sum is σ = 305881351956. Its totient is φ = 100171670592.

The previous prime is 202132121203. The next prime is 202132121251. The reversal of 202132121242 is 242121231202.

It can be written as a sum of positive squares in 2 ways, for example, as 202130268921 + 1852321 = 449589^2 + 1361^2 .

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

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, 447194733 + ... + 447195184.

Almost surely, 2^202132121242 is an apocalyptic number.

202132121242 is a deficient number, since it is larger than the sum of its proper divisors (103749230714).

202132121242 is a wasteful number, since it uses less digits than its factorization.

202132121242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 894390032.

The product of its (nonzero) digits is 768, while the sum is 22.

Adding to 202132121242 its reverse (242121231202), we get a palindrome (444253352444).

The spelling of 202132121242 in words is "two hundred two billion, one hundred thirty-two million, one hundred twenty-one thousand, two hundred forty-two".