12748542 has 8 divisors (see below), whose sum is σ = 25497096. Its totient is φ = 4249512.

The previous prime is 12748513. The next prime is 12748553. The reversal of 12748542 is 24584721.

It is a sphenic number, since it is the product of 3 distinct primes.

12748542 is an admirable number.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1062373 + ... + 1062384.

It is an arithmetic number, because the mean of its divisors is an integer number (3187137).

Almost surely, 2^12748542 is an apocalyptic number.

12748542 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

12748542 is a wasteful number, since it uses less digits than its factorization.

12748542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2124762.

The product of its digits is 17920, while the sum is 33.

The square root of 12748542 is about 3570.5100475982. The cubic root of 12748542 is about 233.6075311694.

The spelling of 12748542 in words is "twelve million, seven hundred forty-eight thousand, five hundred forty-two".