204342434 has 4 divisors (see below), whose sum is σ = 306513654. Its totient is φ = 102171216.

The previous prime is 204342377. The next prime is 204342443. The reversal of 204342434 is 434243402.

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., 199515625 + 4826809 = 14125^2 + 2197^2 .

It is a plaindrome in base 13.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51085607 + ... + 51085610.

Almost surely, 2^204342434 is an apocalyptic number.

204342434 is a deficient number, since it is larger than the sum of its proper divisors (102171220).

204342434 is a wasteful number, since it uses less digits than its factorization.

204342434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102171219.

The product of its (nonzero) digits is 9216, while the sum is 26.

The square root of 204342434 is about 14294.8394184755. The cubic root of 204342434 is about 589.0057313163.

Adding to 204342434 its reverse (434243402), we get a palindrome (638585836).

The spelling of 204342434 in words is "two hundred four million, three hundred forty-two thousand, four hundred thirty-four".