120320999 has 2 divisors, whose sum is σ = 120321000. Its totient is φ = 120320998.

The previous prime is 120320957. The next prime is 120321007. The reversal of 120320999 is 999023021.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-120320999 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (120320099) 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, 60160499 + 60160500.

It is an arithmetic number, because the mean of its divisors is an integer number (60160500).

Almost surely, 2^120320999 is an apocalyptic number.

120320999 is a deficient number, since it is larger than the sum of its proper divisors (1).

120320999 is an equidigital number, since it uses as much as digits as its factorization.

120320999 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8748, while the sum is 35.

The square root of 120320999 is about 10969.0928977742. The cubic root of 120320999 is about 493.6818297381.

The spelling of 120320999 in words is "one hundred twenty million, three hundred twenty thousand, nine hundred ninety-nine".