121442041 has 12 divisors (see below), whose sum is σ = 144717300. Its totient is φ = 101552640.

The previous prime is 121442011. The next prime is 121442051. The reversal of 121442041 is 140244121.

It can be written as a sum of positive squares in 2 ways, for example, as 8976016 + 112466025 = 2996^2 + 10605^2 .

It is not a de Polignac number, because 121442041 - 2²³ = 113053433 is a prime.

It is not an unprimeable number, because it can be changed into a prime (121442011) 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 in 11 ways as a sum of consecutive naturals, for example, 28216 + ... + 32233.

It is an arithmetic number, because the mean of its divisors is an integer number (12059775).

Almost surely, 2^121442041 is an apocalyptic number.

It is an amenable number.

121442041 is a deficient number, since it is larger than the sum of its proper divisors (23275259).

121442041 is an equidigital number, since it uses as much as digits as its factorization.

121442041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60504 (or 60497 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 19.

The square root of 121442041 is about 11020.0744552839. The cubic root of 121442041 is about 495.2103190872.

Adding to 121442041 its reverse (140244121), we get a palindrome (261686162).

It can be divided in two parts, 1214420 and 41, that added together give a triangular number (1214461 = T₁₅₅₈).

The spelling of 121442041 in words is "one hundred twenty-one million, four hundred forty-two thousand, forty-one".