12040142 has 16 divisors (see below), whose sum is σ = 18597600. Its totient is φ = 5842560.

The previous prime is 12040141. The next prime is 12040159. The reversal of 12040142 is 24104021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12040141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29234 + ... + 29642.

It is an arithmetic number, because the mean of its divisors is an integer number (1162350).

Almost surely, 2^12040142 is an apocalyptic number.

12040142 is a deficient number, since it is larger than the sum of its proper divisors (6557458).

12040142 is a wasteful number, since it uses less digits than its factorization.

12040142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 811.

The product of its (nonzero) digits is 64, while the sum is 14.

The square root of 12040142 is about 3469.8907763790. The cubic root of 12040142 is about 229.1978483778.

Adding to 12040142 its reverse (24104021), we get a palindrome (36144163).

The spelling of 12040142 in words is "twelve million, forty thousand, one hundred forty-two".