120321305 has 8 divisors (see below), whose sum is σ = 155492232. Its totient is φ = 88852608.

The previous prime is 120321287. The next prime is 120321307. The reversal of 120321305 is 503123021.

It can be written as a sum of positive squares in 4 ways, for example, as 3400336 + 116920969 = 1844^2 + 10813^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 120321305 - 2⁸ = 120321049 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (120321307) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 925484 + ... + 925613.

It is an arithmetic number, because the mean of its divisors is an integer number (19436529).

Almost surely, 2^120321305 is an apocalyptic number.

It is an amenable number.

120321305 is a deficient number, since it is larger than the sum of its proper divisors (35170927).

120321305 is a wasteful number, since it uses less digits than its factorization.

120321305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1851115.

The product of its (nonzero) digits is 180, while the sum is 17.

The square root of 120321305 is about 10969.1068460472. The cubic root of 120321305 is about 493.6822482478.

Adding to 120321305 its reverse (503123021), we get a palindrome (623444326).

The spelling of 120321305 in words is "one hundred twenty million, three hundred twenty-one thousand, three hundred five".