121844841 has 4 divisors (see below), whose sum is σ = 162459792. Its totient is φ = 81229892.

The previous prime is 121844839. The next prime is 121844857. The reversal of 121844841 is 148448121.

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 not a de Polignac number, because 121844841 - 2¹ = 121844839 is a prime.

It is not an unprimeable number, because it can be changed into a prime (121844861) 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 in 3 ways as a sum of consecutive naturals, for example, 20307471 + ... + 20307476.

It is an arithmetic number, because the mean of its divisors is an integer number (40614948).

Almost surely, 2^121844841 is an apocalyptic number.

It is an amenable number.

121844841 is a deficient number, since it is larger than the sum of its proper divisors (40614951).

121844841 is an equidigital number, since it uses as much as digits as its factorization.

121844841 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40614950.

The product of its digits is 8192, while the sum is 33.

The square root of 121844841 is about 11038.3350646735. The cubic root of 121844841 is about 495.7572208163.

The spelling of 121844841 in words is "one hundred twenty-one million, eight hundred forty-four thousand, eight hundred forty-one".