12105142 has 16 divisors (see below), whose sum is σ = 21313440. Its totient is φ = 5047488.

The previous prime is 12105133. The next prime is 12105143. The reversal of 12105142 is 24150121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12105143) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11167 + ... + 12202.

It is an arithmetic number, because the mean of its divisors is an integer number (1332090).

Almost surely, 2^12105142 is an apocalyptic number.

12105142 is a deficient number, since it is larger than the sum of its proper divisors (9208298).

12105142 is a wasteful number, since it uses less digits than its factorization.

12105142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23415.

The product of its (nonzero) digits is 80, while the sum is 16.

The square root of 12105142 is about 3479.2444582122. The cubic root of 12105142 is about 229.6095581132.

Adding to 12105142 its reverse (24150121), we get a palindrome (36255263).

The spelling of 12105142 in words is "twelve million, one hundred five thousand, one hundred forty-two".