13430121 has 4 divisors (see below), whose sum is σ = 17906832. Its totient is φ = 8953412.

The previous prime is 13430089. The next prime is 13430129. The reversal of 13430121 is 12103431.

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, and also an emirpimes, since its reverse is a distinct semiprime: 12103431 = 3 ⋅4034477.

It is a cyclic number.

It is not a de Polignac number, because 13430121 - 2⁵ = 13430089 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 13430121.

It is not an unprimeable number, because it can be changed into a prime (13430129) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2238351 + ... + 2238356.

It is an arithmetic number, because the mean of its divisors is an integer number (4476708).

Almost surely, 2^13430121 is an apocalyptic number.

It is an amenable number.

13430121 is a deficient number, since it is larger than the sum of its proper divisors (4476711).

13430121 is an equidigital number, since it uses as much as digits as its factorization.

13430121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4476710.

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 13430121 is about 3664.7129491953. The cubic root of 13430121 is about 237.6986098584.

Adding to 13430121 its reverse (12103431), we get a palindrome (25533552).

The spelling of 13430121 in words is "thirteen million, four hundred thirty thousand, one hundred twenty-one".