13400121 has 16 divisors (see below), whose sum is σ = 20579328. Its totient is φ = 7597200.

The previous prime is 13400089. The next prime is 13400129. The reversal of 13400121 is 12100431.

It is a happy number.

13400121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 13400121 - 2⁵ = 13400089 is a prime.

It is a zygodrome in base 6.

It is a junction number, because it is equal to n+sod(n) for n = 13400097 and 13400106.

It is not an unprimeable number, because it can be changed into a prime (13400129) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 316 + ... + 5186.

It is an arithmetic number, because the mean of its divisors is an integer number (1286208).

Almost surely, 2^13400121 is an apocalyptic number.

It is an amenable number.

13400121 is a deficient number, since it is larger than the sum of its proper divisors (7179207).

13400121 is a wasteful number, since it uses less digits than its factorization.

13400121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5012.

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 13400121 is about 3660.6175708478. The cubic root of 13400121 is about 237.5214887297.

Adding to 13400121 its reverse (12100431), we get a palindrome (25500552).

The spelling of 13400121 in words is "thirteen million, four hundred thousand, one hundred twenty-one".