12742785 has 32 divisors (see below), whose sum is σ = 24716160. Its totient is φ = 6177600.

The previous prime is 12742783. The next prime is 12742789. The reversal of 12742785 is 58724721.

It is not a de Polignac number, because 12742785 - 2¹ = 12742783 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (12742783) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2806 + ... + 5775.

It is an arithmetic number, because the mean of its divisors is an integer number (772380).

Almost surely, 2^12742785 is an apocalyptic number.

12742785 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12742785 is a deficient number, since it is larger than the sum of its proper divisors (11973375).

12742785 is a wasteful number, since it uses less digits than its factorization.

12742785 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8606 (or 8600 counting only the distinct ones).

The product of its digits is 31360, while the sum is 36.

The square root of 12742785 is about 3569.7037692223. The cubic root of 12742785 is about 233.5723616301.

The spelling of 12742785 in words is "twelve million, seven hundred forty-two thousand, seven hundred eighty-five".