12004345 has 4 divisors (see below), whose sum is σ = 14405220. Its totient is φ = 9603472.

The previous prime is 12004331. The next prime is 12004357. The reversal of 12004345 is 54340021.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 54340021 = 2113 ⋅25717.

It can be written as a sum of positive squares in 2 ways, for example, as 1687401 + 10316944 = 1299^2 + 3212^2 .

It is a cyclic number.

It is not a de Polignac number, because 12004345 - 2⁷ = 12004217 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1200430 + ... + 1200439.

It is an arithmetic number, because the mean of its divisors is an integer number (3601305).

Almost surely, 2^12004345 is an apocalyptic number.

It is an amenable number.

12004345 is a deficient number, since it is larger than the sum of its proper divisors (2400875).

12004345 is an equidigital number, since it uses as much as digits as its factorization.

12004345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2400874.

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 12004345 is about 3464.7287051081. The cubic root of 12004345 is about 228.9704773062.

Adding to 12004345 its reverse (54340021), we get a palindrome (66344366).

The spelling of 12004345 in words is "twelve million, four thousand, three hundred forty-five".