243121245244 has 24 divisors (see below), whose sum is σ = 434700177408. Its totient is φ = 118923404400.

The previous prime is 243121245239. The next prime is 243121245259. The reversal of 243121245244 is 442542121342.

It is a congruent number.

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, 166957 + ... + 717019.

It is an arithmetic number, because the mean of its divisors is an integer number (18112507392).

Almost surely, 2^243121245244 is an apocalyptic number.

It is an amenable number.

243121245244 is a deficient number, since it is larger than the sum of its proper divisors (191578932164).

243121245244 is a wasteful number, since it uses less digits than its factorization.

243121245244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 552465 (or 552463 counting only the distinct ones).

The product of its digits is 61440, while the sum is 34.

Adding to 243121245244 its reverse (442542121342), we get a palindrome (685663366586).

The spelling of 243121245244 in words is "two hundred forty-three billion, one hundred twenty-one million, two hundred forty-five thousand, two hundred forty-four".