12005142 has 16 divisors (see below), whose sum is σ = 24340080. Its totient is φ = 3946752.

The previous prime is 12005141. The next prime is 12005167. The reversal of 12005142 is 24150021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12005141) 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, 13267 + ... + 14142.

It is an arithmetic number, because the mean of its divisors is an integer number (1521255).

Almost surely, 2^12005142 is an apocalyptic number.

12005142 is an abundant number, since it is smaller than the sum of its proper divisors (12334938).

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

12005142 is a wasteful number, since it uses less digits than its factorization.

12005142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27487.

The product of its (nonzero) digits is 80, while the sum is 15.

The square root of 12005142 is about 3464.8437194194. The cubic root of 12005142 is about 228.9755445112.

Adding to 12005142 its reverse (24150021), we get a palindrome (36155163).

The spelling of 12005142 in words is "twelve million, five thousand, one hundred forty-two".