12345147 has 6 divisors (see below), whose sum is σ = 17831892. Its totient is φ = 8230092.

The previous prime is 12345143. The next prime is 12345149. The reversal of 12345147 is 74154321.

It is not a de Polignac number, because 12345147 - 2² = 12345143 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12345147.

It is not an unprimeable number, because it can be changed into a prime (12345143) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 685833 + ... + 685850.

It is an arithmetic number, because the mean of its divisors is an integer number (2971982).

Almost surely, 2^12345147 is an apocalyptic number.

12345147 is a deficient number, since it is larger than the sum of its proper divisors (5486745).

12345147 is a wasteful number, since it uses less digits than its factorization.

12345147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1371689 (or 1371686 counting only the distinct ones).

The product of its digits is 3360, while the sum is 27.

The square root of 12345147 is about 3513.5661371319. The cubic root of 12345147 is about 231.1171048450.

Adding to 12345147 its reverse (74154321), we get a palindrome (86499468).

The spelling of 12345147 in words is "twelve million, three hundred forty-five thousand, one hundred forty-seven".