242541121 has 2 divisors, whose sum is σ = 242541122. Its totient is φ = 242541120.

The previous prime is 242541077. The next prime is 242541127. The reversal of 242541121 is 121145242.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 240095025 + 2446096 = 15495^2 + 1564^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-242541121 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 242541092 and 242541101.

It is not a weakly prime, because it can be changed into another prime (242541127) 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, 121270560 + 121270561.

It is an arithmetic number, because the mean of its divisors is an integer number (121270561).

Almost surely, 2^242541121 is an apocalyptic number.

It is an amenable number.

242541121 is a deficient number, since it is larger than the sum of its proper divisors (1).

242541121 is an equidigital number, since it uses as much as digits as its factorization.

242541121 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 640, while the sum is 22.

The square root of 242541121 is about 15573.7317621693. The cubic root of 242541121 is about 623.6320982559.

Adding to 242541121 its reverse (121145242), we get a palindrome (363686363).

The spelling of 242541121 in words is "two hundred forty-two million, five hundred forty-one thousand, one hundred twenty-one".