243204230420 has 12 divisors (see below), whose sum is σ = 510728883924. Its totient is φ = 97281692160.

The previous prime is 243204230387. The next prime is 243204230441. The reversal of 243204230420 is 24032402342.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 41780995216 + 201423235204 = 204404^2 + 448802^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 243204230420.

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 3 ways as a sum of consecutive naturals, for example, 6080105741 + ... + 6080105780.

It is an arithmetic number, because the mean of its divisors is an integer number (42560740327).

Almost surely, 2^243204230420 is an apocalyptic number.

243204230420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

243204230420 is an abundant number, since it is smaller than the sum of its proper divisors (267524653504).

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

243204230420 is a wasteful number, since it uses less digits than its factorization.

243204230420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12160211530 (or 12160211528 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 26.

Adding to 243204230420 its reverse (24032402342), we get a palindrome (267236632762).

The spelling of 243204230420 in words is "two hundred forty-three billion, two hundred four million, two hundred thirty thousand, four hundred twenty".