12011642 has 8 divisors (see below), whose sum is σ = 18125856. Its totient is φ = 5969692.

The previous prime is 12011641. The next prime is 12011651. The reversal of 12011642 is 24611021.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 12011642.

It is not an unprimeable number, because it can be changed into a prime (12011641) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 17648 + ... + 18315.

It is an arithmetic number, because the mean of its divisors is an integer number (2265732).

Almost surely, 2^12011642 is an apocalyptic number.

12011642 is a deficient number, since it is larger than the sum of its proper divisors (6114214).

12011642 is a wasteful number, since it uses less digits than its factorization.

12011642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36132.

The product of its (nonzero) digits is 96, while the sum is 17.

The square root of 12011642 is about 3465.7815857321. The cubic root of 12011642 is about 229.0168621540.

Adding to 12011642 its reverse (24611021), we get a palindrome (36622663).

The spelling of 12011642 in words is "twelve million, eleven thousand, six hundred forty-two".