242140111121 has 2 divisors, whose sum is σ = 242140111122. Its totient is φ = 242140111120.

The previous prime is 242140111117. The next prime is 242140111181. The reversal of 242140111121 is 121111041242.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 188954526721 + 53185584400 = 434689^2 + 230620^2 .

It is a cyclic number.

It is not a de Polignac number, because 242140111121 - 2² = 242140111117 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 242140111093 and 242140111102.

It is not a weakly prime, because it can be changed into another prime (242140111181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121070055560 + 121070055561.

It is an arithmetic number, because the mean of its divisors is an integer number (121070055561).

Almost surely, 2^242140111121 is an apocalyptic number.

It is an amenable number.

242140111121 is a deficient number, since it is larger than the sum of its proper divisors (1).

242140111121 is an equidigital number, since it uses as much as digits as its factorization.

242140111121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 128, while the sum is 20.

Adding to 242140111121 its reverse (121111041242), we get a palindrome (363251152363).

The spelling of 242140111121 in words is "two hundred forty-two billion, one hundred forty million, one hundred eleven thousand, one hundred twenty-one".