12128120 has 32 divisors (see below), whose sum is σ = 27447120. Its totient is φ = 4823040.

The previous prime is 12128117. The next prime is 12128131. The reversal of 12128120 is 2182121.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6935 + ... + 8505.

Almost surely, 2^12128120 is an apocalyptic number.

12128120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12128120 is an abundant number, since it is smaller than the sum of its proper divisors (15319000).

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

12128120 is a wasteful number, since it uses less digits than its factorization.

12128120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1775 (or 1771 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

The square root of 12128120 is about 3482.5450463705. The cubic root of 12128120 is about 229.7547480294.

The spelling of 12128120 in words is "twelve million, one hundred twenty-eight thousand, one hundred twenty".