120140305 has 4 divisors (see below), whose sum is σ = 144168372. Its totient is φ = 96112240.

The previous prime is 120140303. The next prime is 120140311. The reversal of 120140305 is 503041021.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 87684496 + 32455809 = 9364^2 + 5697^2 .

It is not a de Polignac number, because 120140305 - 2¹ = 120140303 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (120140303) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12014026 + ... + 12014035.

It is an arithmetic number, because the mean of its divisors is an integer number (36042093).

Almost surely, 2^120140305 is an apocalyptic number.

It is an amenable number.

120140305 is a deficient number, since it is larger than the sum of its proper divisors (24028067).

120140305 is an equidigital number, since it uses as much as digits as its factorization.

120140305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24028066.

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 120140305 is about 10960.8532970750. The cubic root of 120140305 is about 493.4345743746.

Adding to 120140305 its reverse (503041021), we get a palindrome (623181326).

The spelling of 120140305 in words is "one hundred twenty million, one hundred forty thousand, three hundred five".