1144111442 has 4 divisors (see below), whose sum is σ = 1716167166. Its totient is φ = 572055720.

The previous prime is 1144111439. The next prime is 1144111469. The reversal of 1144111442 is 2441114411.

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

It can be written as a sum of positive squares in only one way, i.e., 1143048481 + 1062961 = 33809^2 + 1031^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 286027859 + ... + 286027862.

Almost surely, 2^1144111442 is an apocalyptic number.

1144111442 is a deficient number, since it is larger than the sum of its proper divisors (572055724).

1144111442 is an equidigital number, since it uses as much as digits as its factorization.

1144111442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 572055723.

The product of its digits is 512, while the sum is 23.

The square root of 1144111442 is about 33824.7164363576. The cubic root of 1144111442 is about 1045.8982659740.

Adding to 1144111442 its reverse (2441114411), we get a palindrome (3585225853).

The spelling of 1144111442 in words is "one billion, one hundred forty-four million, one hundred eleven thousand, four hundred forty-two".