12126918 has 16 divisors (see below), whose sum is σ = 24298560. Its totient is φ = 4034856.

The previous prime is 12126913. The next prime is 12126923. The reversal of 12126918 is 81962121.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (12126913) and next prime (12126923).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12126913) 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 7 ways as a sum of consecutive naturals, for example, 2421 + ... + 5487.

It is an arithmetic number, because the mean of its divisors is an integer number (1518660).

Almost surely, 2^12126918 is an apocalyptic number.

12126918 is an abundant number, since it is smaller than the sum of its proper divisors (12171642).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12126918 is a wasteful number, since it uses less digits than its factorization.

12126918 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3731.

The product of its digits is 1728, while the sum is 30.

The square root of 12126918 is about 3482.3724671551. The cubic root of 12126918 is about 229.7471575611.

The spelling of 12126918 in words is "twelve million, one hundred twenty-six thousand, nine hundred eighteen".