13140085 has 12 divisors (see below), whose sum is σ = 18342828. Its totient is φ = 9010176.

The previous prime is 13140079. The next prime is 13140089. The reversal of 13140085 is 58004131.

It can be written as a sum of positive squares in 2 ways, for example, as 3261636 + 9878449 = 1806^2 + 3143^2 .

It is not a de Polignac number, because 13140085 - 2⁹ = 13139573 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13140089) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 26572 + ... + 27061.

It is an arithmetic number, because the mean of its divisors is an integer number (1528569).

Almost surely, 2^13140085 is an apocalyptic number.

It is an amenable number.

13140085 is a deficient number, since it is larger than the sum of its proper divisors (5202743).

13140085 is an equidigital number, since it uses as much as digits as its factorization.

13140085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53652 (or 53645 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 22.

The square root of 13140085 is about 3624.9255164762. The cubic root of 13140085 is about 235.9750344653.

The spelling of 13140085 in words is "thirteen million, one hundred forty thousand, eighty-five".