1123120143 has 6 divisors (see below), whose sum is σ = 1622284664. Its totient is φ = 748746756.

The previous prime is 1123120133. The next prime is 1123120151. The reversal of 1123120143 is 3410213211.

It is not a de Polignac number, because 1123120143 - 2⁴ = 1123120127 is a prime.

It is a super-2 number, since 2×1123120143² = 2522797711224680898, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1123120123) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 62395555 + ... + 62395572.

Almost surely, 2^1123120143 is an apocalyptic number.

1123120143 is a deficient number, since it is larger than the sum of its proper divisors (499164521).

1123120143 is a wasteful number, since it uses less digits than its factorization.

1123120143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124791133 (or 124791130 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 1123120143 is about 33512.9846925039. The cubic root of 1123120143 is about 1039.4622907625.

Adding to 1123120143 its reverse (3410213211), we get a palindrome (4533333354).

The spelling of 1123120143 in words is "one billion, one hundred twenty-three million, one hundred twenty thousand, one hundred forty-three".