43042039099 has 2 divisors, whose sum is σ = 43042039100. Its totient is φ = 43042039098.

The previous prime is 43042039057. The next prime is 43042039111. The reversal of 43042039099 is 99093024034.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 43042039099 - 2⁹ = 43042038587 is a prime.

It is not a weakly prime, because it can be changed into another prime (43042039039) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21521019549 + 21521019550.

It is an arithmetic number, because the mean of its divisors is an integer number (21521019550).

Almost surely, 2^43042039099 is an apocalyptic number.

43042039099 is a deficient number, since it is larger than the sum of its proper divisors (1).

43042039099 is an equidigital number, since it uses as much as digits as its factorization.

43042039099 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 209952, while the sum is 43.

The spelling of 43042039099 in words is "forty-three billion, forty-two million, thirty-nine thousand, ninety-nine".