12681642 has 16 divisors (see below), whose sum is σ = 26238240. Its totient is φ = 4081392.

The previous prime is 12681631. The next prime is 12681703. The reversal of 12681642 is 24618621.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36268 + ... + 36615.

It is an arithmetic number, because the mean of its divisors is an integer number (1639890).

Almost surely, 2^12681642 is an apocalyptic number.

12681642 is an abundant number, since it is smaller than the sum of its proper divisors (13556598).

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

12681642 is a wasteful number, since it uses less digits than its factorization.

12681642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72917.

The product of its digits is 4608, while the sum is 30.

The square root of 12681642 is about 3561.1293152594. The cubic root of 12681642 is about 233.1981834124.

The spelling of 12681642 in words is "twelve million, six hundred eighty-one thousand, six hundred forty-two".