13128542 has 16 divisors (see below), whose sum is σ = 22876512. Its totient is φ = 5533920.

The previous prime is 13128541. The next prime is 13128551. The reversal of 13128542 is 24582131.

13128542 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13128541) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6833 + ... + 8540.

It is an arithmetic number, because the mean of its divisors is an integer number (1429782).

Almost surely, 2^13128542 is an apocalyptic number.

13128542 is a deficient number, since it is larger than the sum of its proper divisors (9747970).

13128542 is a wasteful number, since it uses less digits than its factorization.

13128542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15443.

The product of its digits is 1920, while the sum is 26.

The square root of 13128542 is about 3623.3329960135. The cubic root of 13128542 is about 235.9059162465.

The spelling of 13128542 in words is "thirteen million, one hundred twenty-eight thousand, five hundred forty-two".