2138375 has 8 divisors (see below), whose sum is σ = 2668848. Its totient is φ = 1710600.

The previous prime is 2138371. The next prime is 2138377. The reversal of 2138375 is 5738312.

It is not a de Polignac number, because 2138375 - 2² = 2138371 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 (2138371) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8429 + ... + 8678.

It is an arithmetic number, because the mean of its divisors is an integer number (333606).

2^2138375 is an apocalyptic number.

2138375 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

2138375 is a deficient number, since it is larger than the sum of its proper divisors (530473).

2138375 is an equidigital number, since it uses as much as digits as its factorization.

2138375 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17122 (or 17112 counting only the distinct ones).

The product of its digits is 5040, while the sum is 29.

The square root of 2138375 is about 1462.3183647893. The cubic root of 2138375 is about 128.8332480747.

The spelling of 2138375 in words is "two million, one hundred thirty-eight thousand, three hundred seventy-five".