13401243 has 12 divisors (see below), whose sum is σ = 19451848. Its totient is φ = 8890560.

The previous prime is 13401233. The next prime is 13401247. The reversal of 13401243 is 34210431.

13401243 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 13401243 - 2⁵ = 13401211 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13401247) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1630 + ... + 5427.

Almost surely, 2^13401243 is an apocalyptic number.

13401243 is a deficient number, since it is larger than the sum of its proper divisors (6050605).

13401243 is a wasteful number, since it uses less digits than its factorization.

13401243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7274 (or 7271 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 13401243 is about 3660.7708204694. The cubic root of 13401243 is about 237.5281178159.

Adding to 13401243 its reverse (34210431), we get a palindrome (47611674).

The spelling of 13401243 in words is "thirteen million, four hundred one thousand, two hundred forty-three".