121240241 has 4 divisors (see below), whose sum is σ = 121334592. Its totient is φ = 121145892.

The previous prime is 121240219. The next prime is 121240253. The reversal of 121240241 is 142042121.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121240241 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121240211) 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 3 ways as a sum of consecutive naturals, for example, 45221 + ... + 47826.

It is an arithmetic number, because the mean of its divisors is an integer number (30333648).

Almost surely, 2^121240241 is an apocalyptic number.

It is an amenable number.

121240241 is a deficient number, since it is larger than the sum of its proper divisors (94351).

121240241 is an equidigital number, since it uses as much as digits as its factorization.

121240241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94350.

The product of its (nonzero) digits is 128, while the sum is 17.

The square root of 121240241 is about 11010.9146304928. The cubic root of 121240241 is about 494.9358703439.

Adding to 121240241 its reverse (142042121), we get a palindrome (263282362).

The spelling of 121240241 in words is "one hundred twenty-one million, two hundred forty thousand, two hundred forty-one".