1121143143 has 4 divisors (see below), whose sum is σ = 1494857528. Its totient is φ = 747428760.

The previous prime is 1121143129. The next prime is 1121143147. The reversal of 1121143143 is 3413411211.

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

It is not a de Polignac number, because 1121143143 - 2¹³ = 1121134951 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 (1121143147) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 186857188 + ... + 186857193.

It is an arithmetic number, because the mean of its divisors is an integer number (373714382).

Almost surely, 2^1121143143 is an apocalyptic number.

1121143143 is a deficient number, since it is larger than the sum of its proper divisors (373714385).

1121143143 is an equidigital number, since it uses as much as digits as its factorization.

1121143143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 373714384.

The product of its digits is 288, while the sum is 21.

The square root of 1121143143 is about 33483.4756708440. The cubic root of 1121143143 is about 1038.8520194748.

Adding to 1121143143 its reverse (3413411211), we get a palindrome (4534554354).

The spelling of 1121143143 in words is "one billion, one hundred twenty-one million, one hundred forty-three thousand, one hundred forty-three".