1142044311 has 4 divisors (see below), whose sum is σ = 1522725752. Its totient is φ = 761362872.

The previous prime is 1142044291. The next prime is 1142044357. The reversal of 1142044311 is 1134402411.

It is a semiprime because it is the product of two primes.

It is a de Polignac number, because none of the positive numbers 2^k-1142044311 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1142044361) 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, 190340716 + ... + 190340721.

It is an arithmetic number, because the mean of its divisors is an integer number (380681438).

Almost surely, 2^1142044311 is an apocalyptic number.

1142044311 is a deficient number, since it is larger than the sum of its proper divisors (380681441).

1142044311 is an equidigital number, since it uses as much as digits as its factorization.

1142044311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 380681440.

The product of its (nonzero) digits is 384, while the sum is 21.

The square root of 1142044311 is about 33794.1461055018. The cubic root of 1142044311 is about 1045.2679916749.

Adding to 1142044311 its reverse (1134402411), we get a palindrome (2276446722).

The spelling of 1142044311 in words is "one billion, one hundred forty-two million, forty-four thousand, three hundred eleven".