1123943039 has 2 divisors, whose sum is σ = 1123943040. Its totient is φ = 1123943038.

The previous prime is 1123943021. The next prime is 1123943059. The reversal of 1123943039 is 9303493211.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1123943039 - 2¹² = 1123938943 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1123943059) by changing a digit.

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 as a sum of consecutive naturals, namely, 561971519 + 561971520.

It is an arithmetic number, because the mean of its divisors is an integer number (561971520).

Almost surely, 2^1123943039 is an apocalyptic number.

1123943039 is a deficient number, since it is larger than the sum of its proper divisors (1).

1123943039 is an equidigital number, since it uses as much as digits as its factorization.

1123943039 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 17496, while the sum is 35.

The square root of 1123943039 is about 33525.2597156234. The cubic root of 1123943039 is about 1039.7160957673.

The spelling of 1123943039 in words is "one billion, one hundred twenty-three million, nine hundred forty-three thousand, thirty-nine".