2128727 has 2 divisors, whose sum is σ = 2128728. Its totient is φ = 2128726.

The previous prime is 2128697. The next prime is 2128733. The reversal of 2128727 is 7278212.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2128727 - 2⁶ = 2128663 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2128727.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2128747) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1064363 + 1064364.

It is an arithmetic number, because the mean of its divisors is an integer number (1064364).

2^2128727 is an apocalyptic number.

2128727 is a deficient number, since it is larger than the sum of its proper divisors (1).

2128727 is an equidigital number, since it uses as much as digits as its factorization.

2128727 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3136, while the sum is 29.

The square root of 2128727 is about 1459.0157641369. The cubic root of 2128727 is about 128.6391977240.

The spelling of 2128727 in words is "two million, one hundred twenty-eight thousand, seven hundred twenty-seven".