243121141140 has 24 divisors (see below), whose sum is σ = 680739195360. Its totient is φ = 64832304288.

The previous prime is 243121141117. The next prime is 243121141141. The reversal of 243121141140 is 41141121342.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 243121141140.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243121141141) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2026009450 + ... + 2026009569.

It is an arithmetic number, because the mean of its divisors is an integer number (28364133140).

Almost surely, 2^243121141140 is an apocalyptic number.

243121141140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

243121141140 is an abundant number, since it is smaller than the sum of its proper divisors (437618054220).

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

243121141140 is a wasteful number, since it uses less digits than its factorization.

243121141140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4052019031 (or 4052019029 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 24.

Adding to 243121141140 its reverse (41141121342), we get a palindrome (284262262482).

The spelling of 243121141140 in words is "two hundred forty-three billion, one hundred twenty-one million, one hundred forty-one thousand, one hundred forty".