242241121 has 2 divisors, whose sum is σ = 242241122. Its totient is φ = 242241120.

The previous prime is 242241119. The next prime is 242241133. The reversal of 242241121 is 121142242.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 242238096 + 3025 = 15564^2 + 55^2 .

It is a cyclic number.

It is not a de Polignac number, because 242241121 - 2¹ = 242241119 is a prime.

Together with 242241119, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (242241101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121120560 + 121120561.

It is an arithmetic number, because the mean of its divisors is an integer number (121120561).

Almost surely, 2^242241121 is an apocalyptic number.

It is an amenable number.

242241121 is a deficient number, since it is larger than the sum of its proper divisors (1).

242241121 is an equidigital number, since it uses as much as digits as its factorization.

242241121 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 256, while the sum is 19.

The square root of 242241121 is about 15564.0971790849. The cubic root of 242241121 is about 623.3748678956.

Adding to 242241121 its reverse (121142242), we get a palindrome (363383363).

The spelling of 242241121 in words is "two hundred forty-two million, two hundred forty-one thousand, one hundred twenty-one".