2140005305 has 8 divisors (see below), whose sum is σ = 2719065672. Its totient is φ = 1611298048.

The previous prime is 2140005289. The next prime is 2140005317. The reversal of 2140005305 is 5035000412.

It can be written as a sum of positive squares in 4 ways, for example, as 54804409 + 2085200896 = 7403^2 + 45664^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 2140005305 - 2⁴ = 2140005289 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12588182 + ... + 12588351.

It is an arithmetic number, because the mean of its divisors is an integer number (339883209).

Almost surely, 2^2140005305 is an apocalyptic number.

It is an amenable number.

2140005305 is a deficient number, since it is larger than the sum of its proper divisors (579060367).

2140005305 is a wasteful number, since it uses less digits than its factorization.

2140005305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25176555.

The product of its (nonzero) digits is 600, while the sum is 20.

The square root of 2140005305 is about 46260.1913636336. The cubic root of 2140005305 is about 1288.6598073908.

Adding to 2140005305 its reverse (5035000412), we get a palindrome (7175005717).

The spelling of 2140005305 in words is "two billion, one hundred forty million, five thousand, three hundred five".