12685742 has 16 divisors (see below), whose sum is σ = 19965312. Its totient is φ = 6033720.

The previous prime is 12685733. The next prime is 12685759. The reversal of 12685742 is 24758621.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9053 + ... + 10359.

It is an arithmetic number, because the mean of its divisors is an integer number (1247832).

Almost surely, 2^12685742 is an apocalyptic number.

12685742 is a deficient number, since it is larger than the sum of its proper divisors (7279570).

12685742 is a wasteful number, since it uses less digits than its factorization.

12685742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1543.

The product of its digits is 26880, while the sum is 35.

The square root of 12685742 is about 3561.7049288227. The cubic root of 12685742 is about 233.2233118496.

The spelling of 12685742 in words is "twelve million, six hundred eighty-five thousand, seven hundred forty-two".