202003 has 4 divisors (see below), whose sum is σ = 204640. Its totient is φ = 199368.

The previous prime is 202001. The next prime is 202021. The reversal of 202003 is 300202.

202003 is nontrivially palindromic in base 16.

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 202003 - 2¹ = 202001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (202001) 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, 1200 + ... + 1357.

It is an arithmetic number, because the mean of its divisors is an integer number (51160).

2²⁰²⁰⁰³ is an apocalyptic number.

202003 is a deficient number, since it is larger than the sum of its proper divisors (2637).

202003 is an equidigital number, since it uses as much as digits as its factorization.

202003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2636.

The product of its (nonzero) digits is 12, while the sum is 7.

The square root of 202003 is about 449.4474385287. The cubic root of 202003 is about 58.6749335515.

Adding to 202003 its reverse (300202), we get a palindrome (502205).

The spelling of 202003 in words is "two hundred two thousand, three", and thus it is an iban number.