13128127 has 4 divisors (see below), whose sum is σ = 13158880. Its totient is φ = 13097376.

The previous prime is 13128103. The next prime is 13128139. The reversal of 13128127 is 72182131.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 13128127 - 2⁷ = 13127999 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13128187) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14727 + ... + 15592.

It is an arithmetic number, because the mean of its divisors is an integer number (3289720).

Almost surely, 2^13128127 is an apocalyptic number.

13128127 is a deficient number, since it is larger than the sum of its proper divisors (30753).

13128127 is an equidigital number, since it uses as much as digits as its factorization.

13128127 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30752.

The product of its digits is 672, while the sum is 25.

The square root of 13128127 is about 3623.2757278463. The cubic root of 13128127 is about 235.9034305176.

The spelling of 13128127 in words is "thirteen million, one hundred twenty-eight thousand, one hundred twenty-seven".