1121443142 has 8 divisors (see below), whose sum is σ = 1683259536. Its totient is φ = 560356632.

The previous prime is 1121443133. The next prime is 1121443153. The reversal of 1121443142 is 2413441211.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 178613 + ... + 184784.

It is an arithmetic number, because the mean of its divisors is an integer number (210407442).

Almost surely, 2^1121443142 is an apocalyptic number.

1121443142 is a deficient number, since it is larger than the sum of its proper divisors (561816394).

1121443142 is a wasteful number, since it uses less digits than its factorization.

1121443142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 364942.

The product of its digits is 768, while the sum is 23.

The square root of 1121443142 is about 33487.9551779442. The cubic root of 1121443142 is about 1038.9446709723.

Adding to 1121443142 its reverse (2413441211), we get a palindrome (3534884353).

The spelling of 1121443142 in words is "one billion, one hundred twenty-one million, four hundred forty-three thousand, one hundred forty-two".