12126320 has 20 divisors (see below), whose sum is σ = 28193880. Its totient is φ = 4850496.

The previous prime is 12126319. The next prime is 12126349. The reversal of 12126320 is 2362121.

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 75710 + ... + 75869.

It is an arithmetic number, because the mean of its divisors is an integer number (1409694).

Almost surely, 2^12126320 is an apocalyptic number.

12126320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12126320 is an abundant number, since it is smaller than the sum of its proper divisors (16067560).

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

12126320 is a wasteful number, since it uses less digits than its factorization.

12126320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 151592 (or 151586 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 12126320 is about 3482.2866050915. The cubic root of 12126320 is about 229.7433810847.

Adding to 12126320 its reverse (2362121), we get a palindrome (14488441).

The spelling of 12126320 in words is "twelve million, one hundred twenty-six thousand, three hundred twenty".