12107345 has 4 divisors (see below), whose sum is σ = 14528820. Its totient is φ = 9685872.

The previous prime is 12107327. The next prime is 12107353. The reversal of 12107345 is 54370121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 54370121 = 13 ⋅4182317.

It can be written as a sum of positive squares in 2 ways, for example, as 1661521 + 10445824 = 1289^2 + 3232^2 .

It is a cyclic number.

It is not a de Polignac number, because 12107345 - 2⁸ = 12107089 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12107345.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1210730 + ... + 1210739.

It is an arithmetic number, because the mean of its divisors is an integer number (3632205).

Almost surely, 2^12107345 is an apocalyptic number.

It is an amenable number.

12107345 is a deficient number, since it is larger than the sum of its proper divisors (2421475).

12107345 is an equidigital number, since it uses as much as digits as its factorization.

12107345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2421474.

The product of its (nonzero) digits is 840, while the sum is 23.

The square root of 12107345 is about 3479.5610355331. The cubic root of 12107345 is about 229.6234860559.

Adding to 12107345 its reverse (54370121), we get a palindrome (66477466).

The spelling of 12107345 in words is "twelve million, one hundred seven thousand, three hundred forty-five".