243120443020 has 96 divisors (see below), whose sum is σ = 634138243200. Its totient is φ = 76237645824.

The previous prime is 243120443017. The next prime is 243120443021. The reversal of 243120443020 is 20344021342.

It is a happy number.

243120443020 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (243120443021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 414385 + ... + 811144.

It is an arithmetic number, because the mean of its divisors is an integer number (6605606700).

Almost surely, 2^243120443020 is an apocalyptic number.

243120443020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

243120443020 is an abundant number, since it is smaller than the sum of its proper divisors (391017800180).

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

243120443020 is a wasteful number, since it uses less digits than its factorization.

243120443020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1225667 (or 1225665 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 25.

Adding to 243120443020 its reverse (20344021342), we get a palindrome (263464464362).

The spelling of 243120443020 in words is "two hundred forty-three billion, one hundred twenty million, four hundred forty-three thousand, twenty".