1122123043 has 4 divisors (see below), whose sum is σ = 1122264040. Its totient is φ = 1121982048.

The previous prime is 1122123019. The next prime is 1122123047. The reversal of 1122123043 is 3403212211.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1122123043 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1122123043.

It is not an unprimeable number, because it can be changed into a prime (1122123047) 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, 57798 + ... + 74731.

It is an arithmetic number, because the mean of its divisors is an integer number (280566010).

Almost surely, 2^1122123043 is an apocalyptic number.

1122123043 is a deficient number, since it is larger than the sum of its proper divisors (140997).

1122123043 is an equidigital number, since it uses as much as digits as its factorization.

1122123043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140996.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 1122123043 is about 33498.1050658093. The cubic root of 1122123043 is about 1039.1545900160.

Adding to 1122123043 its reverse (3403212211), we get a palindrome (4525335254).

The spelling of 1122123043 in words is "one billion, one hundred twenty-two million, one hundred twenty-three thousand, forty-three".