13140737 has 4 divisors (see below), whose sum is σ = 13153200. Its totient is φ = 13128276.

The previous prime is 13140731. The next prime is 13140749. The reversal of 13140737 is 73704131.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 73704131 = 47 ⋅1568173.

It is a cyclic number.

It is not a de Polignac number, because 13140737 - 2²⁰ = 12092161 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13140731) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4487 + ... + 6812.

It is an arithmetic number, because the mean of its divisors is an integer number (3288300).

Almost surely, 2^13140737 is an apocalyptic number.

It is an amenable number.

13140737 is a deficient number, since it is larger than the sum of its proper divisors (12463).

13140737 is a wasteful number, since it uses less digits than its factorization.

13140737 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12462.

The product of its (nonzero) digits is 1764, while the sum is 26.

The square root of 13140737 is about 3625.0154482429. The cubic root of 13140737 is about 235.9789373618.

Adding to 13140737 its reverse (73704131), we get a palindrome (86844868).

The spelling of 13140737 in words is "thirteen million, one hundred forty thousand, seven hundred thirty-seven".