12132747 has 56 divisors (see below), whose sum is σ = 21247920. Its totient is φ = 6842880.

The previous prime is 12132739. The next prime is 12132763. The reversal of 12132747 is 74723121.

It is a happy number.

It is not a de Polignac number, because 12132747 - 2³ = 12132739 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a self number, because there is not a number n which added to its sum of digits gives 12132747.

It is not an unprimeable number, because it can be changed into a prime (12132727) by changing a digit.

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 in 55 ways as a sum of consecutive naturals, for example, 136279 + ... + 136367.

Almost surely, 2^12132747 is an apocalyptic number.

12132747 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

12132747 is a deficient number, since it is larger than the sum of its proper divisors (9115173).

12132747 is an equidigital number, since it uses as much as digits as its factorization.

12132747 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135 (or 120 counting only the distinct ones).

The product of its digits is 2352, while the sum is 27.

The square root of 12132747 is about 3483.2092960372. The cubic root of 12132747 is about 229.7839622318.

Adding to 12132747 its reverse (74723121), we get a palindrome (86855868).

The spelling of 12132747 in words is "twelve million, one hundred thirty-two thousand, seven hundred forty-seven".