2043403 has 4 divisors (see below), whose sum is σ = 2090968. Its totient is φ = 1995840.

The previous prime is 2043401. The next prime is 2043409. The reversal of 2043403 is 3043402.

2043403 is nontrivially palindromic in base 6.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2043403 - 2¹ = 2043401 is a prime.

It is a Duffinian number.

It is a zygodrome in base 6.

It is not an unprimeable number, because it can be changed into a prime (2043401) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23718 + ... + 23803.

It is an arithmetic number, because the mean of its divisors is an integer number (522742).

2^2043403 is an apocalyptic number.

2043403 is a deficient number, since it is larger than the sum of its proper divisors (47565).

2043403 is an equidigital number, since it uses as much as digits as its factorization.

2043403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47564.

The product of its (nonzero) digits is 288, while the sum is 16.

The square root of 2043403 is about 1429.4764775959. The cubic root of 2043403 is about 126.8969962753.

Adding to 2043403 its reverse (3043402), we get a palindrome (5086805).

Subtracting 2043403 from its reverse (3043402), we obtain a palindrome (999999).

The spelling of 2043403 in words is "two million, forty-three thousand, four hundred three".