12138675 has 24 divisors (see below), whose sum is σ = 20765040. Its totient is φ = 6249600.

The previous prime is 12138673. The next prime is 12138683. The reversal of 12138675 is 57683121.

It is not a de Polignac number, because 12138675 - 2¹ = 12138673 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12138673) 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 23 ways as a sum of consecutive naturals, for example, 616 + ... + 4965.

It is an arithmetic number, because the mean of its divisors is an integer number (865210).

Almost surely, 2^12138675 is an apocalyptic number.

12138675 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

12138675 is a deficient number, since it is larger than the sum of its proper divisors (8626365).

12138675 is a wasteful number, since it uses less digits than its factorization.

12138675 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5623 (or 5618 counting only the distinct ones).

The product of its digits is 10080, while the sum is 33.

The square root of 12138675 is about 3484.0601315132. The cubic root of 12138675 is about 229.8213799065.

It can be divided in two parts, 12 and 138675, that multiplied together give a square (1664100 = 1290²).

The spelling of 12138675 in words is "twelve million, one hundred thirty-eight thousand, six hundred seventy-five".