242775121 has 2 divisors, whose sum is σ = 242775122. Its totient is φ = 242775120.

The previous prime is 242775089. The next prime is 242775131. The reversal of 242775121 is 121577242.

242775121 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., 141491025 + 101284096 = 11895^2 + 10064^2 .

It is a cyclic number.

It is not a de Polignac number, because 242775121 - 2⁵ = 242775089 is a prime.

It is not a weakly prime, because it can be changed into another prime (242775131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121387560 + 121387561.

It is an arithmetic number, because the mean of its divisors is an integer number (121387561).

Almost surely, 2^242775121 is an apocalyptic number.

It is an amenable number.

242775121 is a deficient number, since it is larger than the sum of its proper divisors (1).

242775121 is an equidigital number, since it uses as much as digits as its factorization.

242775121 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7840, while the sum is 31.

The square root of 242775121 is about 15581.2426012818. The cubic root of 242775121 is about 623.8325907266.

The spelling of 242775121 in words is "two hundred forty-two million, seven hundred seventy-five thousand, one hundred twenty-one".