12866134 has 4 divisors (see below), whose sum is σ = 19299204. Its totient is φ = 6433066.

The previous prime is 12866129. The next prime is 12866137. The reversal of 12866134 is 43166821.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 43166821 = 47 ⋅918443.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 12866096 and 12866105.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12866137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3216532 + ... + 3216535.

It is an arithmetic number, because the mean of its divisors is an integer number (4824801).

Almost surely, 2^12866134 is an apocalyptic number.

12866134 is a deficient number, since it is larger than the sum of its proper divisors (6433070).

12866134 is an equidigital number, since it uses as much as digits as its factorization.

12866134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6433069.

The product of its digits is 6912, while the sum is 31.

The square root of 12866134 is about 3586.9393638588. The cubic root of 12866134 is about 234.3235959326.

The spelling of 12866134 in words is "twelve million, eight hundred sixty-six thousand, one hundred thirty-four".