204542530 has 16 divisors (see below), whose sum is σ = 368582400. Its totient is φ = 81726832.

The previous prime is 204542431. The next prime is 204542573. The reversal of 204542530 is 35245402.

It is a junction number, because it is equal to n+sod(n) for n = 204542495 and 204542504.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1330 + ... + 20269.

It is an arithmetic number, because the mean of its divisors is an integer number (23036400).

Almost surely, 2^204542530 is an apocalyptic number.

204542530 is a deficient number, since it is larger than the sum of its proper divisors (164039870).

204542530 is a wasteful number, since it uses less digits than its factorization.

204542530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22553.

The product of its (nonzero) digits is 4800, while the sum is 25.

The square root of 204542530 is about 14301.8365953468. The cubic root of 204542530 is about 589.1979238041.

Adding to 204542530 its reverse (35245402), we get a palindrome (239787932).

The spelling of 204542530 in words is "two hundred four million, five hundred forty-two thousand, five hundred thirty".