1143111042 has 40 divisors (see below), whose sum is σ = 2712093516. Its totient is φ = 358622208.

The previous prime is 1143111001. The next prime is 1143111083. The reversal of 1143111042 is 2401113411.

It is an interprime number because it is at equal distance from previous prime (1143111001) and next prime (1143111083).

It can be written as a sum of positive squares in 2 ways, for example, as 1084450761 + 58660281 = 32931^2 + 7659^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 204783 + ... + 210290.

Almost surely, 2^1143111042 is an apocalyptic number.

1143111042 is an abundant number, since it is smaller than the sum of its proper divisors (1568982474).

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

1143111042 is a wasteful number, since it uses less digits than its factorization.

1143111042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 415104 (or 415095 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

The square root of 1143111042 is about 33809.9251995623. The cubic root of 1143111042 is about 1045.5933359651.

Adding to 1143111042 its reverse (2401113411), we get a palindrome (3544224453).

The spelling of 1143111042 in words is "one billion, one hundred forty-three million, one hundred eleven thousand, forty-two".