2128127 has 4 divisors (see below), whose sum is σ = 2132040. Its totient is φ = 2124216.

The previous prime is 2128103. The next prime is 2128153. The reversal of 2128127 is 7218212.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2128127 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 (2128157) 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, 977 + ... + 2282.

It is an arithmetic number, because the mean of its divisors is an integer number (533010).

2^2128127 is an apocalyptic number.

2128127 is a deficient number, since it is larger than the sum of its proper divisors (3913).

2128127 is an equidigital number, since it uses as much as digits as its factorization.

2128127 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3912.

The product of its digits is 448, while the sum is 23.

The square root of 2128127 is about 1458.8101315798. The cubic root of 2128127 is about 128.6271105671.

The spelling of 2128127 in words is "two million, one hundred twenty-eight thousand, one hundred twenty-seven".