204002 has 4 divisors (see below), whose sum is σ = 306006. Its totient is φ = 102000.

The previous prime is 203999. The next prime is 204007. The reversal of 204002 is 200402.

204002 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in only one way, i.e., 201601 + 2401 = 449^2 + 49^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50999 + ... + 51002.

2²⁰⁴⁰⁰² is an apocalyptic number.

204002 is a deficient number, since it is larger than the sum of its proper divisors (102004).

204002 is a wasteful number, since it uses less digits than its factorization.

204002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102003.

The product of its (nonzero) digits is 16, while the sum is 8.

The square root of 204002 is about 451.6658056572. The cubic root of 204002 is about 58.8678455462.

Adding to 204002 its reverse (200402), we get a palindrome (404404).

Subtracting from 204002 its reverse (200402), we obtain a square (3600 = 60²).

It can be divided in two parts, 20400 and 2, that added together give a palindrome (20402).

The spelling of 204002 in words is "two hundred four thousand, two", and thus it is an iban number.