12345047 has 16 divisors (see below), whose sum is σ = 14636160. Its totient is φ = 10264800.

The previous prime is 12345017. The next prime is 12345049. The reversal of 12345047 is 74054321.

It is not a de Polignac number, because 12345047 - 2²² = 8150743 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12345049) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18404 + ... + 19062.

It is an arithmetic number, because the mean of its divisors is an integer number (914760).

Almost surely, 2^12345047 is an apocalyptic number.

12345047 is a deficient number, since it is larger than the sum of its proper divisors (2291113).

12345047 is a wasteful number, since it uses less digits than its factorization.

12345047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 814.

The product of its (nonzero) digits is 3360, while the sum is 26.

The square root of 12345047 is about 3513.5519065470. The cubic root of 12345047 is about 231.1164808003.

Adding to 12345047 its reverse (74054321), we get a palindrome (86399368).

The spelling of 12345047 in words is "twelve million, three hundred forty-five thousand, forty-seven".