2128375 has 8 divisors (see below), whose sum is σ = 2656368. Its totient is φ = 1702600.

The previous prime is 2128333. The next prime is 2128381. The reversal of 2128375 is 5738212.

It is not a de Polignac number, because 2128375 - 2¹⁹ = 1604087 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 8389 + ... + 8638.

It is an arithmetic number, because the mean of its divisors is an integer number (332046).

2^2128375 is an apocalyptic number.

2128375 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

2128375 is a deficient number, since it is larger than the sum of its proper divisors (527993).

2128375 is an equidigital number, since it uses as much as digits as its factorization.

2128375 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17042 (or 17032 counting only the distinct ones).

The product of its digits is 3360, while the sum is 28.

The square root of 2128375 is about 1458.8951298843. The cubic root of 2128375 is about 128.6321068674.

The spelling of 2128375 in words is "two million, one hundred twenty-eight thousand, three hundred seventy-five".