1142443112 has 16 divisors (see below), whose sum is σ = 2268085860. Its totient is φ = 537620224.

The previous prime is 1142443111. The next prime is 1142443123. The reversal of 1142443112 is 2113442411.

It can be written as a sum of positive squares in 2 ways, for example, as 908781316 + 233661796 = 30146^2 + 15286^2 .

It is not an unprimeable number, because it can be changed into a prime (1142443111) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4200023 + ... + 4200294.

Almost surely, 2^1142443112 is an apocalyptic number.

It is an amenable number.

1142443112 is a deficient number, since it is larger than the sum of its proper divisors (1125642748).

1142443112 is a wasteful number, since it uses less digits than its factorization.

1142443112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8400340 (or 8400336 counting only the distinct ones).

The product of its digits is 768, while the sum is 23.

The square root of 1142443112 is about 33800.0460354716. The cubic root of 1142443112 is about 1045.3896464432.

Adding to 1142443112 its reverse (2113442411), we get a palindrome (3255885523).

The spelling of 1142443112 in words is "one billion, one hundred forty-two million, four hundred forty-three thousand, one hundred twelve".