120409999943 has 2 divisors, whose sum is σ = 120409999944. Its totient is φ = 120409999942.

The previous prime is 120409999867. The next prime is 120410000033. The reversal of 120409999943 is 349999904021.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 120409999943 - 2¹⁴ = 120409983559 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 (120409999643) 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, 60204999971 + 60204999972.

It is an arithmetic number, because the mean of its divisors is an integer number (60204999972).

Almost surely, 2^120409999943 is an apocalyptic number.

120409999943 is a deficient number, since it is larger than the sum of its proper divisors (1).

120409999943 is an equidigital number, since it uses as much as digits as its factorization.

120409999943 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5668704, while the sum is 59.

The spelling of 120409999943 in words is "one hundred twenty billion, four hundred nine million, nine hundred ninety-nine thousand, nine hundred forty-three".