2043385 has 4 divisors (see below), whose sum is σ = 2452068. Its totient is φ = 1634704.

The previous prime is 2043341. The next prime is 2043397. The reversal of 2043385 is 5833402.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5833402 = 2 ⋅2916701.

It can be written as a sum of positive squares in 2 ways, for example, as 622521 + 1420864 = 789^2 + 1192^2 .

It is a cyclic number.

It is not a de Polignac number, because 2043385 - 2⁷ = 2043257 is a prime.

It is a super-3 number, since 3×2043385³ = 25595985633369274875, which contains 333 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 204334 + ... + 204343.

It is an arithmetic number, because the mean of its divisors is an integer number (613017).

2^2043385 is an apocalyptic number.

It is an amenable number.

2043385 is a deficient number, since it is larger than the sum of its proper divisors (408683).

2043385 is an equidigital number, since it uses as much as digits as its factorization.

2043385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 408682.

The product of its (nonzero) digits is 2880, while the sum is 25.

The square root of 2043385 is about 1429.4701815708. The cubic root of 2043385 is about 126.8966236693.

Adding to 2043385 its reverse (5833402), we get a palindrome (7876787).

The spelling of 2043385 in words is "two million, forty-three thousand, three hundred eighty-five".