13140845 has 4 divisors (see below), whose sum is σ = 15769020. Its totient is φ = 10512672.

The previous prime is 13140839. The next prime is 13140851. The reversal of 13140845 is 54804131.

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

It is an interprime number because it is at equal distance from previous prime (13140839) and next prime (13140851).

It can be written as a sum of positive squares in 2 ways, for example, as 7823209 + 5317636 = 2797^2 + 2306^2 .

It is a cyclic number.

It is not a de Polignac number, because 13140845 - 2¹⁰ = 13139821 is a prime.

It is a congruent number.

It is an unprimeable number.

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, 1314080 + ... + 1314089.

It is an arithmetic number, because the mean of its divisors is an integer number (3942255).

Almost surely, 2^13140845 is an apocalyptic number.

It is an amenable number.

13140845 is a deficient number, since it is larger than the sum of its proper divisors (2628175).

13140845 is an equidigital number, since it uses as much as digits as its factorization.

13140845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2628174.

The product of its (nonzero) digits is 1920, while the sum is 26.

The square root of 13140845 is about 3625.0303447006. The cubic root of 13140845 is about 235.9795838415.

Adding to 13140845 its reverse (54804131), we get a palindrome (67944976).

The spelling of 13140845 in words is "thirteen million, one hundred forty thousand, eight hundred forty-five".