123340121 has 8 divisors (see below), whose sum is σ = 124491360. Its totient is φ = 122192928.

The previous prime is 123340111. The next prime is 123340157. The reversal of 123340121 is 121043321.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 123340121 - 2⁶ = 123340057 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 123340121.

It is not an unprimeable number, because it can be changed into a prime (123340111) 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 7 ways as a sum of consecutive naturals, for example, 129770 + ... + 130716.

It is an arithmetic number, because the mean of its divisors is an integer number (15561420).

Almost surely, 2^123340121 is an apocalyptic number.

It is an amenable number.

123340121 is a deficient number, since it is larger than the sum of its proper divisors (1151239).

123340121 is an equidigital number, since it uses as much as digits as its factorization.

123340121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2023.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 123340121 is about 11105.8597596044. The cubic root of 123340121 is about 497.7769588240.

Adding to 123340121 its reverse (121043321), we get a palindrome (244383442).

The spelling of 123340121 in words is "one hundred twenty-three million, three hundred forty thousand, one hundred twenty-one".