13140423 has 12 divisors (see below), whose sum is σ = 19021288. Its totient is φ = 8741520.

The previous prime is 13140409. The next prime is 13140427. The reversal of 13140423 is 32404131.

13140423 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 13140423 - 2⁶ = 13140359 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13140396 and 13140405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13140427) 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, 3861 + ... + 6417.

Almost surely, 2^13140423 is an apocalyptic number.

13140423 is a deficient number, since it is larger than the sum of its proper divisors (5880865).

13140423 is a wasteful number, since it uses less digits than its factorization.

13140423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3134 (or 3131 counting only the distinct ones).

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

The square root of 13140423 is about 3624.9721378240. The cubic root of 13140423 is about 235.9770577621.

Adding to 13140423 its reverse (32404131), we get a palindrome (45544554).

The spelling of 13140423 in words is "thirteen million, one hundred forty thousand, four hundred twenty-three".