12081345 has 16 divisors (see below), whose sum is σ = 19474560. Its totient is φ = 6395264.

The previous prime is 12081343. The next prime is 12081389. The reversal of 12081345 is 54318021.

It is a cyclic number.

It is not a de Polignac number, because 12081345 - 2¹ = 12081343 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12081343) 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, 885 + ... + 4994.

It is an arithmetic number, because the mean of its divisors is an integer number (1217160).

Almost surely, 2^12081345 is an apocalyptic number.

12081345 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12081345 is a deficient number, since it is larger than the sum of its proper divisors (7393215).

12081345 is a wasteful number, since it uses less digits than its factorization.

12081345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6024.

The product of its (nonzero) digits is 960, while the sum is 24.

The square root of 12081345 is about 3475.8229241433. The cubic root of 12081345 is about 229.4589994204.

Adding to 12081345 its reverse (54318021), we get a palindrome (66399366).

The spelling of 12081345 in words is "twelve million, eighty-one thousand, three hundred forty-five".