243421012 has 24 divisors (see below), whose sum is σ = 441907200. Its totient is φ = 117185376.

The previous prime is 243421007. The next prime is 243421043. The reversal of 243421012 is 210124342.

243421012 is digitally balanced in base 3, 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 (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41689 + ... + 47167.

It is an arithmetic number, because the mean of its divisors is an integer number (18412800).

Almost surely, 2^243421012 is an apocalyptic number.

It is an amenable number.

243421012 is a deficient number, since it is larger than the sum of its proper divisors (198486188).

243421012 is a wasteful number, since it uses less digits than its factorization.

243421012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5895 (or 5893 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 243421012 is about 15601.9553902708. The cubic root of 243421012 is about 624.3853259194.

Adding to 243421012 its reverse (210124342), we get a palindrome (453545354).

The spelling of 243421012 in words is "two hundred forty-three million, four hundred twenty-one thousand, twelve".