13402243 has 4 divisors (see below), whose sum is σ = 13552920. Its totient is φ = 13251568.

The previous prime is 13402237. The next prime is 13402247. The reversal of 13402243 is 34220431.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 34220431 = 7 ⋅4888633.

It is a cyclic number.

It is not a de Polignac number, because 13402243 - 2¹⁷ = 13271171 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 13402243.

It is not an unprimeable number, because it can be changed into a prime (13402247) 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, 75205 + ... + 75382.

It is an arithmetic number, because the mean of its divisors is an integer number (3388230).

Almost surely, 2^13402243 is an apocalyptic number.

13402243 is a deficient number, since it is larger than the sum of its proper divisors (150677).

13402243 is an equidigital number, since it uses as much as digits as its factorization.

13402243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150676.

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 13402243 is about 3660.9074011780. The cubic root of 13402243 is about 237.5340257806.

Adding to 13402243 its reverse (34220431), we get a palindrome (47622674).

The spelling of 13402243 in words is "thirteen million, four hundred two thousand, two hundred forty-three".