13704121 has 2 divisors, whose sum is σ = 13704122. Its totient is φ = 13704120.

The previous prime is 13704101. The next prime is 13704137. The reversal of 13704121 is 12140731.

13704121 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10169721 + 3534400 = 3189^2 + 1880^2 .

It is an emirp because it is prime and its reverse (12140731) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13704121 - 2⁷ = 13703993 is a prime.

It is not a weakly prime, because it can be changed into another prime (13704101) 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 as a sum of consecutive naturals, namely, 6852060 + 6852061.

It is an arithmetic number, because the mean of its divisors is an integer number (6852061).

Almost surely, 2^13704121 is an apocalyptic number.

It is an amenable number.

13704121 is a deficient number, since it is larger than the sum of its proper divisors (1).

13704121 is an equidigital number, since it uses as much as digits as its factorization.

13704121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 168, while the sum is 19.

The square root of 13704121 is about 3701.9077514168. The cubic root of 13704121 is about 239.3042407321.

Adding to 13704121 its reverse (12140731), we get a palindrome (25844852).

The spelling of 13704121 in words is "thirteen million, seven hundred four thousand, one hundred twenty-one".