2128427 has 8 divisors (see below), whose sum is σ = 2478816. Its totient is φ = 1789632.

The previous prime is 2128409. The next prime is 2128439. The reversal of 2128427 is 7248212.

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 2128427 - 2¹⁶ = 2062891 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2128396 and 2128405.

It is not an unprimeable number, because it can be changed into a prime (2128447) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2498 + ... + 3239.

It is an arithmetic number, because the mean of its divisors is an integer number (309852).

2^2128427 is an apocalyptic number.

2128427 is a deficient number, since it is larger than the sum of its proper divisors (350389).

2128427 is an equidigital number, since it uses as much as digits as its factorization.

2128427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5797.

The product of its digits is 1792, while the sum is 26.

The square root of 2128427 is about 1458.9129514813. The cubic root of 2128427 is about 128.6331544295.

The spelling of 2128427 in words is "two million, one hundred twenty-eight thousand, four hundred twenty-seven".