243121245204 has 24 divisors (see below), whose sum is σ = 568524237568. Its totient is φ = 80863081920.

The previous prime is 243121245181. The next prime is 243121245233. The reversal of 243121245204 is 402542121342.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22160932 + ... + 22171899.

Almost surely, 2^243121245204 is an apocalyptic number.

It is an amenable number.

243121245204 is an abundant number, since it is smaller than the sum of its proper divisors (325402992364).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

243121245204 is a wasteful number, since it uses less digits than its factorization.

243121245204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44333295 (or 44333293 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 30.

Adding to 243121245204 its reverse (402542121342), we get a palindrome (645663366546).

The spelling of 243121245204 in words is "two hundred forty-three billion, one hundred twenty-one million, two hundred forty-five thousand, two hundred four".