12042646 has 24 divisors (see below), whose sum is σ = 22695120. Its totient is φ = 4691280.

The previous prime is 12042619. The next prime is 12042659. The reversal of 12042646 is 64624021.

It is a self number, because there is not a number n which added to its sum of digits gives 12042646.

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 in 11 ways as a sum of consecutive naturals, for example, 1861 + ... + 5248.

It is an arithmetic number, because the mean of its divisors is an integer number (945630).

Almost surely, 2^12042646 is an apocalyptic number.

12042646 is a deficient number, since it is larger than the sum of its proper divisors (10652474).

12042646 is a wasteful number, since it uses less digits than its factorization.

12042646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7140 (or 7129 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 25.

The square root of 12042646 is about 3470.2515758948. The cubic root of 12042646 is about 229.2137361093.

Adding to 12042646 its reverse (64624021), we get a palindrome (76666667).

The spelling of 12042646 in words is "twelve million, forty-two thousand, six hundred forty-six".