12105238 has 16 divisors (see below), whose sum is σ = 18960480. Its totient is φ = 5789056.

The previous prime is 12105211. The next prime is 12105271. The reversal of 12105238 is 83250121.

12105238 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5631 + ... + 7477.

It is an arithmetic number, because the mean of its divisors is an integer number (1185030).

Almost surely, 2^12105238 is an apocalyptic number.

12105238 is a deficient number, since it is larger than the sum of its proper divisors (6855242).

12105238 is a wasteful number, since it uses less digits than its factorization.

12105238 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1991.

The product of its (nonzero) digits is 480, while the sum is 22.

The square root of 12105238 is about 3479.2582542835. The cubic root of 12105238 is about 229.6101650855.

Adding to 12105238 its reverse (83250121), we get a palindrome (95355359).

The spelling of 12105238 in words is "twelve million, one hundred five thousand, two hundred thirty-eight".