12405345 has 8 divisors (see below), whose sum is σ = 19848576. Its totient is φ = 6616176.

The previous prime is 12405343. The next prime is 12405353. The reversal of 12405345 is 54350421.

12405345 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12405345 - 2¹ = 12405343 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12405343) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 413497 + ... + 413526.

It is an arithmetic number, because the mean of its divisors is an integer number (2481072).

Almost surely, 2^12405345 is an apocalyptic number.

12405345 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12405345 is a deficient number, since it is larger than the sum of its proper divisors (7443231).

12405345 is an equidigital number, since it uses as much as digits as its factorization.

12405345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 827031.

The product of its (nonzero) digits is 2400, while the sum is 24.

The square root of 12405345 is about 3522.1222295656. The cubic root of 12405345 is about 231.4921573379.

Adding to 12405345 its reverse (54350421), we get a palindrome (66755766).

The spelling of 12405345 in words is "twelve million, four hundred five thousand, three hundred forty-five".