13140047 has 2 divisors, whose sum is σ = 13140048. Its totient is φ = 13140046.

The previous prime is 13140013. The next prime is 13140079. The reversal of 13140047 is 74004131.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 13140047 - 2¹⁰ = 13139023 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13140007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6570023 + 6570024.

It is an arithmetic number, because the mean of its divisors is an integer number (6570024).

Almost surely, 2^13140047 is an apocalyptic number.

13140047 is a deficient number, since it is larger than the sum of its proper divisors (1).

13140047 is an equidigital number, since it uses as much as digits as its factorization.

13140047 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 336, while the sum is 20.

The square root of 13140047 is about 3624.9202749854. The cubic root of 13140047 is about 235.9748069919.

Adding to 13140047 its reverse (74004131), we get a palindrome (87144178).

The spelling of 13140047 in words is "thirteen million, one hundred forty thousand, forty-seven".