12126656 has 14 divisors (see below), whose sum is σ = 24063960. Its totient is φ = 6063296.

The previous prime is 12126643. The next prime is 12126671. The reversal of 12126656 is 65662121.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 94676 + ... + 94803.

Almost surely, 2^12126656 is an apocalyptic number.

12126656 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

12126656 is a deficient number, since it is larger than the sum of its proper divisors (11937304).

12126656 is an equidigital number, since it uses as much as digits as its factorization.

12126656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 189491 (or 189481 counting only the distinct ones).

The product of its digits is 4320, while the sum is 29.

The square root of 12126656 is about 3482.3348489196. The cubic root of 12126656 is about 229.7455029998.

Adding to 12126656 its reverse (65662121), we get a palindrome (77788777).

The spelling of 12126656 in words is "twelve million, one hundred twenty-six thousand, six hundred fifty-six".