123441121 has 4 divisors (see below), whose sum is σ = 123470100. Its totient is φ = 123412144.

The previous prime is 123441113. The next prime is 123441127. The reversal of 123441121 is 121144321.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 59120721 + 64320400 = 7689^2 + 8020^2 .

It is a cyclic number.

It is not a de Polignac number, because 123441121 - 2³ = 123441113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123441127) 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, 6706 + ... + 17083.

It is an arithmetic number, because the mean of its divisors is an integer number (30867525).

Almost surely, 2^123441121 is an apocalyptic number.

It is an amenable number.

123441121 is a deficient number, since it is larger than the sum of its proper divisors (28979).

123441121 is an equidigital number, since it uses as much as digits as its factorization.

123441121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28978.

The product of its digits is 192, while the sum is 19.

The square root of 123441121 is about 11110.4059781810. The cubic root of 123441121 is about 497.9127939320.

Adding to 123441121 its reverse (121144321), we get a palindrome (244585442).

The spelling of 123441121 in words is "one hundred twenty-three million, four hundred forty-one thousand, one hundred twenty-one".