12135345 has 8 divisors (see below), whose sum is σ = 19416576. Its totient is φ = 6472176.

The previous prime is 12135337. The next prime is 12135349. The reversal of 12135345 is 54353121.

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

It is not a de Polignac number, because 12135345 - 2³ = 12135337 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12135349) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 404497 + ... + 404526.

It is an arithmetic number, because the mean of its divisors is an integer number (2427072).

Almost surely, 2^12135345 is an apocalyptic number.

12135345 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12135345 is a deficient number, since it is larger than the sum of its proper divisors (7281231).

12135345 is an equidigital number, since it uses as much as digits as its factorization.

12135345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 809031.

The product of its digits is 1800, while the sum is 24.

The square root of 12135345 is about 3483.5822080152. The cubic root of 12135345 is about 229.8003623685.

Adding to 12135345 its reverse (54353121), we get a palindrome (66488466).

The spelling of 12135345 in words is "twelve million, one hundred thirty-five thousand, three hundred forty-five".