243121244252 has 24 divisors (see below), whose sum is σ = 426017667600. Its totient is φ = 121401979776.

The previous prime is 243121244213. The next prime is 243121244287. The reversal of 243121244252 is 252442121342.

243121244252 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24654899 + ... + 24664757.

It is an arithmetic number, because the mean of its divisors is an integer number (17750736150).

Almost surely, 2^243121244252 is an apocalyptic number.

It is an amenable number.

243121244252 is a deficient number, since it is larger than the sum of its proper divisors (182896423348).

243121244252 is a wasteful number, since it uses less digits than its factorization.

243121244252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17285 (or 17283 counting only the distinct ones).

The product of its digits is 30720, while the sum is 32.

Adding to 243121244252 its reverse (252442121342), we get a palindrome (495563365594).

The spelling of 243121244252 in words is "two hundred forty-three billion, one hundred twenty-one million, two hundred forty-four thousand, two hundred fifty-two".