12105320 has 48 divisors (see below), whose sum is σ = 28031940. Its totient is φ = 4704512.

The previous prime is 12105319. The next prime is 12105341. The reversal of 12105320 is 2350121.

It is a happy number.

12105320 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 12096484 + 8836 = 3478^2 + 94^2 .

It is a junction number, because it is equal to n+sod(n) for n = 12105295 and 12105304.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 88292 + ... + 88428.

Almost surely, 2^12105320 is an apocalyptic number.

12105320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12105320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14015970).

12105320 is an abundant number, since it is smaller than the sum of its proper divisors (15926620).

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

12105320 is a wasteful number, since it uses less digits than its factorization.

12105320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 242 (or 191 counting only the distinct ones).

The product of its (nonzero) digits is 60, while the sum is 14.

The square root of 12105320 is about 3479.2700383845. The cubic root of 12105320 is about 229.6106835385.

Adding to 12105320 its reverse (2350121), we get a palindrome (14455441).

The spelling of 12105320 in words is "twelve million, one hundred five thousand, three hundred twenty".