12812145 has 32 divisors (see below), whose sum is σ = 21565440. Its totient is φ = 6486720.

The previous prime is 12812143. The next prime is 12812147. The reversal of 12812145 is 54121821.

It is an interprime number because it is at equal distance from previous prime (12812143) and next prime (12812147).

It is not a de Polignac number, because 12812145 - 2¹ = 12812143 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12812143) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 27202 + ... + 27668.

It is an arithmetic number, because the mean of its divisors is an integer number (673920).

Almost surely, 2^12812145 is an apocalyptic number.

12812145 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12812145 is a deficient number, since it is larger than the sum of its proper divisors (8753295).

12812145 is a wasteful number, since it uses less digits than its factorization.

12812145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 565.

The product of its digits is 640, while the sum is 24.

The square root of 12812145 is about 3579.4056769246. The cubic root of 12812145 is about 233.9953794106.

Adding to 12812145 its reverse (54121821), we get a palindrome (66933966).

The spelling of 12812145 in words is "twelve million, eight hundred twelve thousand, one hundred forty-five".