120005321 has 2 divisors, whose sum is σ = 120005322. Its totient is φ = 120005320.

The previous prime is 120005317. The next prime is 120005323. The reversal of 120005321 is 123500021.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 64577296 + 55428025 = 8036^2 + 7445^2 .

It is a cyclic number.

It is not a de Polignac number, because 120005321 - 2² = 120005317 is a prime.

Together with 120005323, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 120005296 and 120005305.

It is not a weakly prime, because it can be changed into another prime (120005323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60002660 + 60002661.

It is an arithmetic number, because the mean of its divisors is an integer number (60002661).

Almost surely, 2^120005321 is an apocalyptic number.

It is an amenable number.

120005321 is a deficient number, since it is larger than the sum of its proper divisors (1).

120005321 is an equidigital number, since it uses as much as digits as its factorization.

120005321 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 60, while the sum is 14.

The square root of 120005321 is about 10954.6940167218. The cubic root of 120005321 is about 493.2497051553.

Adding to 120005321 its reverse (123500021), we get a palindrome (243505342).

The spelling of 120005321 in words is "one hundred twenty million, five thousand, three hundred twenty-one".