243402021204 has 12 divisors (see below), whose sum is σ = 567938049504. Its totient is φ = 81134007064.

The previous prime is 243402021143. The next prime is 243402021221. The reversal of 243402021204 is 402120204342.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

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, 10141750872 + ... + 10141750895.

It is an arithmetic number, because the mean of its divisors is an integer number (47328170792).

Almost surely, 2^243402021204 is an apocalyptic number.

It is an amenable number.

243402021204 is an abundant number, since it is smaller than the sum of its proper divisors (324536028300).

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

243402021204 is a wasteful number, since it uses less digits than its factorization.

243402021204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20283501774 (or 20283501772 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 24.

Adding to 243402021204 its reverse (402120204342), we get a palindrome (645522225546).

The spelling of 243402021204 in words is "two hundred forty-three billion, four hundred two million, twenty-one thousand, two hundred four".