252404351242 has 8 divisors (see below), whose sum is σ = 378608968836. Its totient is φ = 126201361632.

The previous prime is 252404351237. The next prime is 252404351281. The reversal of 252404351242 is 242153404252.

It can be written as a sum of positive squares in 2 ways, for example, as 252155626801 + 248724441 = 502151^2 + 15771^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 252404351198 and 252404351207.

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, 113988 + ... + 719584.

Almost surely, 2^252404351242 is an apocalyptic number.

252404351242 is a deficient number, since it is larger than the sum of its proper divisors (126204617594).

252404351242 is a wasteful number, since it uses less digits than its factorization.

252404351242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 813992.

The product of its (nonzero) digits is 76800, while the sum is 34.

Adding to 252404351242 its reverse (242153404252), we get a palindrome (494557755494).

The spelling of 252404351242 in words is "two hundred fifty-two billion, four hundred four million, three hundred fifty-one thousand, two hundred forty-two".