12129836 has 6 divisors (see below), whose sum is σ = 21227220. Its totient is φ = 6064916.

The previous prime is 12129829. The next prime is 12129851. The reversal of 12129836 is 63892121.

It is an alternating number because its digits alternate between odd and even.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 1516226 + ... + 1516233.

It is an arithmetic number, because the mean of its divisors is an integer number (3537870).

Almost surely, 2^12129836 is an apocalyptic number.

It is an amenable number.

12129836 is a deficient number, since it is larger than the sum of its proper divisors (9097384).

12129836 is a wasteful number, since it uses less digits than its factorization.

12129836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3032463 (or 3032461 counting only the distinct ones).

The product of its digits is 5184, while the sum is 32.

The square root of 12129836 is about 3482.7914092004. The cubic root of 12129836 is about 229.7655834695.

The spelling of 12129836 in words is "twelve million, one hundred twenty-nine thousand, eight hundred thirty-six".