13432121 has 2 divisors, whose sum is σ = 13432122. Its totient is φ = 13432120.

The previous prime is 13432109. The next prime is 13432129. The reversal of 13432121 is 12123431.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13424896 + 7225 = 3664^2 + 85^2 .

It is a cyclic number.

It is not a de Polignac number, because 13432121 - 2¹⁸ = 13169977 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 13432121.

It is not a weakly prime, because it can be changed into another prime (13432129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6716060 + 6716061.

It is an arithmetic number, because the mean of its divisors is an integer number (6716061).

Almost surely, 2^13432121 is an apocalyptic number.

It is an amenable number.

13432121 is a deficient number, since it is larger than the sum of its proper divisors (1).

13432121 is an equidigital number, since it uses as much as digits as its factorization.

13432121 is an evil number, because the sum of its binary digits is even.

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

The square root of 13432121 is about 3664.9858117051. The cubic root of 13432121 is about 237.7104085514.

Adding to 13432121 its reverse (12123431), we get a palindrome (25555552).

The spelling of 13432121 in words is "thirteen million, four hundred thirty-two thousand, one hundred twenty-one".