12143042 has 16 divisors (see below), whose sum is σ = 18765432. Its totient is φ = 5890560.

The previous prime is 12143023. The next prime is 12143063. The reversal of 12143042 is 24034121.

It can be written as a sum of positive squares in 4 ways, for example, as 12103441 + 39601 = 3479^2 + 199^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 12143042.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9692 + ... + 10872.

Almost surely, 2^12143042 is an apocalyptic number.

12143042 is a deficient number, since it is larger than the sum of its proper divisors (6622390).

12143042 is a wasteful number, since it uses less digits than its factorization.

12143042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1333.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 12143042 is about 3484.6867864989. The cubic root of 12143042 is about 229.8489367207.

Adding to 12143042 its reverse (24034121), we get a palindrome (36177163).

The spelling of 12143042 in words is "twelve million, one hundred forty-three thousand, forty-two".