12728142 has 36 divisors (see below), whose sum is σ = 32082336. Its totient is φ = 3636360.

The previous prime is 12728123. The next prime is 12728159. The reversal of 12728142 is 24182721.

12728142 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 an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 6334 + ... + 8097.

It is an arithmetic number, because the mean of its divisors is an integer number (891176).

Almost surely, 2^12728142 is an apocalyptic number.

12728142 is an abundant number, since it is smaller than the sum of its proper divisors (19354194).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12728142 is a wasteful number, since it uses less digits than its factorization.

12728142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14453 (or 14443 counting only the distinct ones).

The product of its digits is 1792, while the sum is 27.

The square root of 12728142 is about 3567.6521691443. The cubic root of 12728142 is about 233.4828597145.

The spelling of 12728142 in words is "twelve million, seven hundred twenty-eight thousand, one hundred forty-two".