12102747 has 4 divisors (see below), whose sum is σ = 16137000. Its totient is φ = 8068496.

The previous prime is 12102733. The next prime is 12102751. The reversal of 12102747 is 74720121.

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

It is a cyclic number.

It is not a de Polignac number, because 12102747 - 2⁸ = 12102491 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12102757) 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, 2017122 + ... + 2017127.

It is an arithmetic number, because the mean of its divisors is an integer number (4034250).

Almost surely, 2^12102747 is an apocalyptic number.

12102747 is a deficient number, since it is larger than the sum of its proper divisors (4034253).

12102747 is an equidigital number, since it uses as much as digits as its factorization.

12102747 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4034252.

The product of its (nonzero) digits is 784, while the sum is 24.

The square root of 12102747 is about 3478.9002572652. The cubic root of 12102747 is about 229.5944143789.

Adding to 12102747 its reverse (74720121), we get a palindrome (86822868).

The spelling of 12102747 in words is "twelve million, one hundred two thousand, seven hundred forty-seven".