13140705 has 32 divisors (see below), whose sum is σ = 22498560. Its totient is φ = 6533120.

The previous prime is 13140697. The next prime is 13140719. The reversal of 13140705 is 50704131.

It is not a de Polignac number, because 13140705 - 2³ = 13140697 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 13681 + ... + 14609.

It is an arithmetic number, because the mean of its divisors is an integer number (703080).

Almost surely, 2^13140705 is an apocalyptic number.

13140705 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

13140705 is a deficient number, since it is larger than the sum of its proper divisors (9357855).

13140705 is a wasteful number, since it uses less digits than its factorization.

13140705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1001.

The product of its (nonzero) digits is 420, while the sum is 21.

The square root of 13140705 is about 3625.0110344660. The cubic root of 13140705 is about 235.9787458117.

Adding to 13140705 its reverse (50704131), we get a palindrome (63844836).

The spelling of 13140705 in words is "thirteen million, one hundred forty thousand, seven hundred five".