204071 has 4 divisors (see below), whose sum is σ = 233232. Its totient is φ = 174912.

The previous prime is 204067. The next prime is 204101. The reversal of 204071 is 170402.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 170402 = 2 ⋅85201.

It is a cyclic number.

It is not a de Polignac number, because 204071 - 2² = 204067 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 (204371) 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, 14570 + ... + 14583.

It is an arithmetic number, because the mean of its divisors is an integer number (58308).

2²⁰⁴⁰⁷¹ is an apocalyptic number.

204071 is a deficient number, since it is larger than the sum of its proper divisors (29161).

204071 is an equidigital number, since it uses as much as digits as its factorization.

204071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29160.

The product of its (nonzero) digits is 56, while the sum is 14.

The square root of 204071 is about 451.7421831089. The cubic root of 204071 is about 58.8744817940.

Adding to 204071 its reverse (170402), we get a palindrome (374473).

The spelling of 204071 in words is "two hundred four thousand, seventy-one", and thus it is an iban number.