12126859 has 6 divisors (see below), whose sum is σ = 12531660. Its totient is φ = 11734740.

The previous prime is 12126853. The next prime is 12126869. The reversal of 12126859 is 95862121.

It is not a de Polignac number, because 12126859 - 2¹⁷ = 11995787 is a prime.

It is a super-3 number, since 3×12126859³ (a number of 22 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12126853) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5349 + ... + 7270.

It is an arithmetic number, because the mean of its divisors is an integer number (2088610).

Almost surely, 2^12126859 is an apocalyptic number.

12126859 is a deficient number, since it is larger than the sum of its proper divisors (404801).

12126859 is an equidigital number, since it uses as much as digits as its factorization.

12126859 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12681 (or 12650 counting only the distinct ones).

The product of its digits is 8640, while the sum is 34.

The square root of 12126859 is about 3482.3639959085. The cubic root of 12126859 is about 229.7467849711.

The spelling of 12126859 in words is "twelve million, one hundred twenty-six thousand, eight hundred fifty-nine".