243123204 has 48 divisors (see below), whose sum is σ = 599244800. Its totient is φ = 76597920.

The previous prime is 243123193. The next prime is 243123217. The reversal of 243123204 is 402321342.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8397 + ... + 23595.

Almost surely, 2^243123204 is an apocalyptic number.

It is an amenable number.

243123204 is an abundant number, since it is smaller than the sum of its proper divisors (356121596).

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

243123204 is a wasteful number, since it uses less digits than its factorization.

243123204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15280 (or 15278 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 21.

The square root of 243123204 is about 15592.4085374903. The cubic root of 243123204 is about 624.1305919148.

Adding to 243123204 its reverse (402321342), we get a palindrome (645444546).

The spelling of 243123204 in words is "two hundred forty-three million, one hundred twenty-three thousand, two hundred four".