243121245144 has 64 divisors (see below), whose sum is σ = 608944643040. Its totient is φ = 80888371200.

The previous prime is 243121245109. The next prime is 243121245181. The reversal of 243121245144 is 441542121342.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31500774 + ... + 31508490.

Almost surely, 2^243121245144 is an apocalyptic number.

243121245144 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

243121245144 is an abundant number, since it is smaller than the sum of its proper divisors (365823397896).

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

243121245144 is a wasteful number, since it uses less digits than its factorization.

243121245144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10020 (or 10016 counting only the distinct ones).

The product of its digits is 30720, while the sum is 33.

Adding to 243121245144 its reverse (441542121342), we get a palindrome (684663366486).

The spelling of 243121245144 in words is "two hundred forty-three billion, one hundred twenty-one million, two hundred forty-five thousand, one hundred forty-four".