243440132442 has 64 divisors (see below), whose sum is σ = 535631007744. Its totient is φ = 73291446720.

The previous prime is 243440132381. The next prime is 243440132473. The reversal of 243440132442 is 244231044342.

243440132442 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 19903933 + ... + 19916159.

It is an arithmetic number, because the mean of its divisors is an integer number (8369234496).

Almost surely, 2^243440132442 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 243440132442, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (267815503872).

243440132442 is an abundant number, since it is smaller than the sum of its proper divisors (292190875302).

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

243440132442 is a wasteful number, since it uses less digits than its factorization.

243440132442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17723.

The product of its (nonzero) digits is 73728, while the sum is 33.

Adding to 243440132442 its reverse (244231044342), we get a palindrome (487671176784).

The spelling of 243440132442 in words is "two hundred forty-three billion, four hundred forty million, one hundred thirty-two thousand, four hundred forty-two".