1142140043 has 4 divisors (see below), whose sum is σ = 1245970968. Its totient is φ = 1038309120.

The previous prime is 1142140007. The next prime is 1142140057. The reversal of 1142140043 is 3400412411.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3400412411 = 11 ⋅309128401.

It is a cyclic number.

It is not a de Polignac number, because 1142140043 - 2⁶ = 1142139979 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1142139997 and 1142140024.

It is not an unprimeable number, because it can be changed into a prime (1142140063) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 51915446 + ... + 51915467.

It is an arithmetic number, because the mean of its divisors is an integer number (311492742).

Almost surely, 2^1142140043 is an apocalyptic number.

1142140043 is a deficient number, since it is larger than the sum of its proper divisors (103830925).

1142140043 is a wasteful number, since it uses less digits than its factorization.

1142140043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103830924.

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 1142140043 is about 33795.5624749759. The cubic root of 1142140043 is about 1045.2971974301.

Adding to 1142140043 its reverse (3400412411), we get a palindrome (4542552454).

The spelling of 1142140043 in words is "one billion, one hundred forty-two million, one hundred forty thousand, forty-three".