40123043039 has 2 divisors, whose sum is σ = 40123043040. Its totient is φ = 40123043038.

The previous prime is 40123043027. The next prime is 40123043047. The reversal of 40123043039 is 93034032104.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40123043039 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 (40123043069) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20061521519 + 20061521520.

It is an arithmetic number, because the mean of its divisors is an integer number (20061521520).

Almost surely, 2^40123043039 is an apocalyptic number.

40123043039 is a deficient number, since it is larger than the sum of its proper divisors (1).

40123043039 is an equidigital number, since it uses as much as digits as its factorization.

40123043039 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7776, while the sum is 29.

The spelling of 40123043039 in words is "forty billion, one hundred twenty-three million, forty-three thousand, thirty-nine".