242698121 has 2 divisors, whose sum is σ = 242698122. Its totient is φ = 242698120.

The previous prime is 242698109. The next prime is 242698151. The reversal of 242698121 is 121896242.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 199939600 + 42758521 = 14140^2 + 6539^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-242698121 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (242698151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121349060 + 121349061.

It is an arithmetic number, because the mean of its divisors is an integer number (121349061).

Almost surely, 2^242698121 is an apocalyptic number.

It is an amenable number.

242698121 is a deficient number, since it is larger than the sum of its proper divisors (1).

242698121 is an equidigital number, since it uses as much as digits as its factorization.

242698121 is an evil number, because the sum of its binary digits is even.

The product of its digits is 13824, while the sum is 35.

The square root of 242698121 is about 15578.7714855826. The cubic root of 242698121 is about 623.7666309356.

The spelling of 242698121 in words is "two hundred forty-two million, six hundred ninety-eight thousand, one hundred twenty-one".