243121240450 has 144 divisors (see below), whose sum is σ = 525150138240. Its totient is φ = 83540195200.

The previous prime is 243121240379. The next prime is 243121240489. The reversal of 243121240450 is 54042121342.

243121240450 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 71 ways as a sum of consecutive naturals, for example, 8231409 + ... + 8260891.

It is an arithmetic number, because the mean of its divisors is an integer number (3646875960).

Almost surely, 2^243121240450 is an apocalyptic number.

243121240450 is an abundant number, since it is smaller than the sum of its proper divisors (282028897790).

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

243121240450 is a wasteful number, since it uses less digits than its factorization.

243121240450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29593 (or 29577 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 28.

Adding to 243121240450 its reverse (54042121342), we get a palindrome (297163361792).

It can be divided in two parts, 2431 and 21240450, that added together give a square (21242881 = 4609²).

The spelling of 243121240450 in words is "two hundred forty-three billion, one hundred twenty-one million, two hundred forty thousand, four hundred fifty".