242543031121 has 2 divisors, whose sum is σ = 242543031122. Its totient is φ = 242543031120.

The previous prime is 242543031083. The next prime is 242543031131. The reversal of 242543031121 is 121130345242.

242543031121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 240527470096 + 2015561025 = 490436^2 + 44895^2 .

It is a cyclic number.

It is not a de Polignac number, because 242543031121 - 2²¹ = 242540933969 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 242543031121.

It is not a weakly prime, because it can be changed into another prime (242543031131) by changing a digit.

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 as a sum of consecutive naturals, namely, 121271515560 + 121271515561.

It is an arithmetic number, because the mean of its divisors is an integer number (121271515561).

Almost surely, 2^242543031121 is an apocalyptic number.

It is an amenable number.

242543031121 is a deficient number, since it is larger than the sum of its proper divisors (1).

242543031121 is an equidigital number, since it uses as much as digits as its factorization.

242543031121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5760, while the sum is 28.

Adding to 242543031121 its reverse (121130345242), we get a palindrome (363673376363).

The spelling of 242543031121 in words is "two hundred forty-two billion, five hundred forty-three million, thirty-one thousand, one hundred twenty-one".