121042241 has 2 divisors, whose sum is σ = 121042242. Its totient is φ = 121042240.

The previous prime is 121042237. The next prime is 121042247. The reversal of 121042241 is 142240121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 118352641 + 2689600 = 10879^2 + 1640^2 .

It is a cyclic number.

It is not a de Polignac number, because 121042241 - 2² = 121042237 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (121042247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60521120 + 60521121.

It is an arithmetic number, because the mean of its divisors is an integer number (60521121).

Almost surely, 2^121042241 is an apocalyptic number.

It is an amenable number.

121042241 is a deficient number, since it is larger than the sum of its proper divisors (1).

121042241 is an equidigital number, since it uses as much as digits as its factorization.

121042241 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 17.

The square root of 121042241 is about 11001.9198779122. The cubic root of 121042241 is about 494.6662934632. Note that the first 3 decimals are identical.

Adding to 121042241 its reverse (142240121), we get a palindrome (263282362).

The spelling of 121042241 in words is "one hundred twenty-one million, forty-two thousand, two hundred forty-one".