12807147 has 4 divisors (see below), whose sum is σ = 17076200. Its totient is φ = 8538096.

The previous prime is 12807139. The next prime is 12807169. The reversal of 12807147 is 74170821.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 74170821 = 3 ⋅24723607.

It is not a de Polignac number, because 12807147 - 2³ = 12807139 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12807107) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2134522 + ... + 2134527.

It is an arithmetic number, because the mean of its divisors is an integer number (4269050).

Almost surely, 2^12807147 is an apocalyptic number.

12807147 is a deficient number, since it is larger than the sum of its proper divisors (4269053).

12807147 is an equidigital number, since it uses as much as digits as its factorization.

12807147 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4269052.

The product of its (nonzero) digits is 3136, while the sum is 30.

The square root of 12807147 is about 3578.7074482276. The cubic root of 12807147 is about 233.9649483622.

Adding to 12807147 its reverse (74170821), we get a palindrome (86977968).

The spelling of 12807147 in words is "twelve million, eight hundred seven thousand, one hundred forty-seven".