12845139 has 8 divisors (see below), whose sum is σ = 17230080. Its totient is φ = 8511816.

The previous prime is 12845137. The next prime is 12845167. The reversal of 12845139 is 93154821.

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

It is not a de Polignac number, because 12845139 - 2¹ = 12845137 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12845137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12319 + ... + 13320.

It is an arithmetic number, because the mean of its divisors is an integer number (2153760).

Almost surely, 2^12845139 is an apocalyptic number.

12845139 is a deficient number, since it is larger than the sum of its proper divisors (4384941).

12845139 is a wasteful number, since it uses less digits than its factorization.

12845139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25809.

The product of its digits is 8640, while the sum is 33.

The square root of 12845139 is about 3584.0115792224. The cubic root of 12845139 is about 234.1960698688.

The spelling of 12845139 in words is "twelve million, eight hundred forty-five thousand, one hundred thirty-nine".