12860642 has 4 divisors (see below), whose sum is σ = 19290966. Its totient is φ = 6430320.

The previous prime is 12860623. The next prime is 12860669. The reversal of 12860642 is 24606821.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 6754801 + 6105841 = 2599^2 + 2471^2 .

It is a super-2 number, since 2×12860642² = 330792225304328, which contains 22 as substring.

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 as a sum of consecutive naturals, namely, 3215159 + ... + 3215162.

Almost surely, 2^12860642 is an apocalyptic number.

12860642 is a deficient number, since it is larger than the sum of its proper divisors (6430324).

12860642 is an equidigital number, since it uses as much as digits as its factorization.

12860642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6430323.

The product of its (nonzero) digits is 4608, while the sum is 29.

The square root of 12860642 is about 3586.1737269686. The cubic root of 12860642 is about 234.2902502946.

The spelling of 12860642 in words is "twelve million, eight hundred sixty thousand, six hundred forty-two".