243121242243 has 8 divisors (see below), whose sum is σ = 353630897856. Its totient is φ = 147346207400.

The previous prime is 243121242229. The next prime is 243121242281. The reversal of 243121242243 is 342242121342.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 243121242243 - 2⁶ = 243121242179 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 243121242243.

It is not an unprimeable number, because it can be changed into a prime (243121242643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3683655153 + ... + 3683655218.

It is an arithmetic number, because the mean of its divisors is an integer number (44203862232).

Almost surely, 2^243121242243 is an apocalyptic number.

243121242243 is a deficient number, since it is larger than the sum of its proper divisors (110509655613).

243121242243 is a wasteful number, since it uses less digits than its factorization.

243121242243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7367310385.

The product of its digits is 18432, while the sum is 30.

Adding to 243121242243 its reverse (342242121342), we get a palindrome (585363363585).

The spelling of 243121242243 in words is "two hundred forty-three billion, one hundred twenty-one million, two hundred forty-two thousand, two hundred forty-three".