12105538 has 8 divisors (see below), whose sum is σ = 18226620. Its totient is φ = 6030000.

The previous prime is 12105529. The next prime is 12105551. The reversal of 12105538 is 83550121.

It is a happy number.

12105538 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 11923209 + 182329 = 3453^2 + 427^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

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, 10713 + ... + 11788.

Almost surely, 2^12105538 is an apocalyptic number.

12105538 is a deficient number, since it is larger than the sum of its proper divisors (6121082).

12105538 is a wasteful number, since it uses less digits than its factorization.

12105538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22772.

The product of its (nonzero) digits is 1200, while the sum is 25.

The square root of 12105538 is about 3479.3013666539. The cubic root of 12105538 is about 229.6120618534.

Adding to 12105538 its reverse (83550121), we get a palindrome (95655659).

The spelling of 12105538 in words is "twelve million, one hundred five thousand, five hundred thirty-eight".