243440234120 has 32 divisors (see below), whose sum is σ = 547799272920. Its totient is φ = 97365649920.

The previous prime is 243440234111. The next prime is 243440234143. The reversal of 243440234120 is 21432044342.

It can be written as a sum of positive squares in 4 ways, for example, as 220668820516 + 22771413604 = 469754^2 + 150902^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 56804 + ... + 700076.

Almost surely, 2^243440234120 is an apocalyptic number.

243440234120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

243440234120 is an abundant number, since it is smaller than the sum of its proper divisors (304359038800).

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

243440234120 is a wasteful number, since it uses less digits than its factorization.

243440234120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 652745 (or 652741 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 29.

Adding to 243440234120 its reverse (21432044342), we get a palindrome (264872278462).

The spelling of 243440234120 in words is "two hundred forty-three billion, four hundred forty million, two hundred thirty-four thousand, one hundred twenty".