12646342 has 4 divisors (see below), whose sum is σ = 18969516. Its totient is φ = 6323170.

The previous prime is 12646331. The next prime is 12646363. The reversal of 12646342 is 24364621.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 24364621 = 17 ⋅1433213.

It is a self number, because there is not a number n which added to its sum of digits gives 12646342.

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 as a sum of consecutive naturals, namely, 3161584 + ... + 3161587.

It is an arithmetic number, because the mean of its divisors is an integer number (4742379).

Almost surely, 2^12646342 is an apocalyptic number.

12646342 is a deficient number, since it is larger than the sum of its proper divisors (6323174).

12646342 is an equidigital number, since it uses as much as digits as its factorization.

12646342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6323173.

The product of its digits is 6912, while the sum is 28.

The square root of 12646342 is about 3556.1695685105. The cubic root of 12646342 is about 232.9816093106.

The spelling of 12646342 in words is "twelve million, six hundred forty-six thousand, three hundred forty-two".