1142312043 has 16 divisors (see below), whose sum is σ = 1603895040. Its totient is φ = 721743264.

The previous prime is 1142312033. The next prime is 1142312057. The reversal of 1142312043 is 3402132411.

It is not a de Polignac number, because 1142312043 - 2⁹ = 1142311531 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1142312033) 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 15 ways as a sum of consecutive naturals, for example, 68421 + ... + 83462.

It is an arithmetic number, because the mean of its divisors is an integer number (100243440).

Almost surely, 2^1142312043 is an apocalyptic number.

1142312043 is a deficient number, since it is larger than the sum of its proper divisors (461582997).

1142312043 is a wasteful number, since it uses less digits than its factorization.

1142312043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 152018.

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 1142312043 is about 33798.1070919660. The cubic root of 1142312043 is about 1045.3496667966.

Adding to 1142312043 its reverse (3402132411), we get a palindrome (4544444454).

The spelling of 1142312043 in words is "one billion, one hundred forty-two million, three hundred twelve thousand, forty-three".