13253421 has 16 divisors (see below), whose sum is σ = 18845568. Its totient is φ = 8256000.

The previous prime is 13253407. The next prime is 13253423. The reversal of 13253421 is 12435231.

13253421 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 13253421 - 2⁷ = 13253293 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13253423) 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 15 ways as a sum of consecutive naturals, for example, 6841 + ... + 8561.

It is an arithmetic number, because the mean of its divisors is an integer number (1177848).

Almost surely, 2^13253421 is an apocalyptic number.

It is an amenable number.

13253421 is a deficient number, since it is larger than the sum of its proper divisors (5592147).

13253421 is a wasteful number, since it uses less digits than its factorization.

13253421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1892.

The product of its digits is 720, while the sum is 21.

The square root of 13253421 is about 3640.5248248021. The cubic root of 13253421 is about 236.6515379692.

Adding to 13253421 its reverse (12435231), we get a palindrome (25688652).

The spelling of 13253421 in words is "thirteen million, two hundred fifty-three thousand, four hundred twenty-one".