2127391 has 8 divisors (see below), whose sum is σ = 2462720. Its totient is φ = 1799928.

The previous prime is 2127383. The next prime is 2127401. The reversal of 2127391 is 1937212.

2127391 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2127391 - 2³ = 2127383 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 (2127331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1371 + ... + 2476.

It is an arithmetic number, because the mean of its divisors is an integer number (307840).

2^2127391 is an apocalyptic number.

2127391 is a deficient number, since it is larger than the sum of its proper divisors (335329).

2127391 is an equidigital number, since it uses as much as digits as its factorization.

2127391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3933.

The product of its digits is 756, while the sum is 25.

The square root of 2127391 is about 1458.5578493841. The cubic root of 2127391 is about 128.6122805516.

The spelling of 2127391 in words is "two million, one hundred twenty-seven thousand, three hundred ninety-one".