242929121 has 2 divisors, whose sum is σ = 242929122. Its totient is φ = 242929120.

The previous prime is 242929111. The next prime is 242929123. The reversal of 242929121 is 121929242.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 242736400 + 192721 = 15580^2 + 439^2 .

It is a cyclic number.

It is not a de Polignac number, because 242929121 - 2²² = 238734817 is a prime.

Together with 242929123, 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 (242929123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121464560 + 121464561.

It is an arithmetic number, because the mean of its divisors is an integer number (121464561).

Almost surely, 2^242929121 is an apocalyptic number.

It is an amenable number.

242929121 is a deficient number, since it is larger than the sum of its proper divisors (1).

242929121 is an equidigital number, since it uses as much as digits as its factorization.

242929121 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5184, while the sum is 32.

The square root of 242929121 is about 15586.1836573293. The cubic root of 242929121 is about 623.9644684801.

The spelling of 242929121 in words is "two hundred forty-two million, nine hundred twenty-nine thousand, one hundred twenty-one".