13140491 has 16 divisors (see below), whose sum is σ = 16277184. Its totient is φ = 10329984.

The previous prime is 13140487. The next prime is 13140503. The reversal of 13140491 is 19404131.

It is not a de Polignac number, because 13140491 - 2² = 13140487 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13140461) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17561 + ... + 18293.

It is an arithmetic number, because the mean of its divisors is an integer number (1017324).

Almost surely, 2^13140491 is an apocalyptic number.

13140491 is a deficient number, since it is larger than the sum of its proper divisors (3136693).

13140491 is a wasteful number, since it uses less digits than its factorization.

13140491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 950.

The product of its (nonzero) digits is 432, while the sum is 23.

The square root of 13140491 is about 3624.9815171943. The cubic root of 13140491 is about 235.9774648117.

It can be divided in two parts, 131404 and 91, that multiplied together give a square (11957764 = 3458²).

The spelling of 13140491 in words is "thirteen million, one hundred forty thousand, four hundred ninety-one".