243121254452 has 24 divisors (see below), whose sum is σ = 451485316800. Its totient is φ = 114304610816.

The previous prime is 243121254449. The next prime is 243121254463. The reversal of 243121254452 is 254452121342.

243121254452 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22389677 + ... + 22400532.

It is an arithmetic number, because the mean of its divisors is an integer number (18811888200).

Almost surely, 2^243121254452 is an apocalyptic number.

It is an amenable number.

243121254452 is a deficient number, since it is larger than the sum of its proper divisors (208364062348).

243121254452 is a wasteful number, since it uses less digits than its factorization.

243121254452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44790295 (or 44790293 counting only the distinct ones).

The product of its digits is 76800, while the sum is 35.

Adding to 243121254452 its reverse (254452121342), we get a palindrome (497573375794).

The spelling of 243121254452 in words is "two hundred forty-three billion, one hundred twenty-one million, two hundred fifty-four thousand, four hundred fifty-two".