120704209 has 2 divisors, whose sum is σ = 120704210. Its totient is φ = 120704208.

The previous prime is 120704201. The next prime is 120704237. The reversal of 120704209 is 902407021.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 65529025 + 55175184 = 8095^2 + 7428^2 .

It is an emirp because it is prime and its reverse (902407021) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 120704209 - 2³ = 120704201 is a prime.

It is not a weakly prime, because it can be changed into another prime (120704201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60352104 + 60352105.

It is an arithmetic number, because the mean of its divisors is an integer number (60352105).

Almost surely, 2^120704209 is an apocalyptic number.

It is an amenable number.

120704209 is a deficient number, since it is larger than the sum of its proper divisors (1).

120704209 is an equidigital number, since it uses as much as digits as its factorization.

120704209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1008, while the sum is 25.

The square root of 120704209 is about 10986.5467277029. The cubic root of 120704209 is about 494.2053829181.

The spelling of 120704209 in words is "one hundred twenty million, seven hundred four thousand, two hundred nine".