204434 has 4 divisors (see below), whose sum is σ = 306654. Its totient is φ = 102216.

The previous prime is 204431. The next prime is 204437. The reversal of 204434 is 434402.

204434 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, and also an emirpimes, since its reverse is a distinct semiprime: 434402 = 2 ⋅217201.

It is an interprime number because it is at equal distance from previous prime (204431) and next prime (204437).

It can be written as a sum of positive squares in only one way, i.e., 162409 + 42025 = 403^2 + 205^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (204431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51107 + ... + 51110.

2²⁰⁴⁴³⁴ is an apocalyptic number.

204434 is a deficient number, since it is larger than the sum of its proper divisors (102220).

204434 is a wasteful number, since it uses less digits than its factorization.

204434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102219.

The product of its (nonzero) digits is 384, while the sum is 17.

The square root of 204434 is about 452.1437824409. The cubic root of 204434 is about 58.9093696151.

Adding to 204434 its reverse (434402), we get a palindrome (638836).

It can be divided in two parts, 2044 and 34, that multiplied together give a palindrome (69496).

The spelling of 204434 in words is "two hundred four thousand, four hundred thirty-four".