204542413 has 4 divisors (see below), whose sum is σ = 204902460. Its totient is φ = 204182368.

The previous prime is 204542411. The next prime is 204542417. The reversal of 204542413 is 314245402.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 135536164 + 69006249 = 11642^2 + 8307^2 .

It is a cyclic number.

It is not a de Polignac number, because 204542413 - 2¹ = 204542411 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 (204542411) 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, 179170 + ... + 180307.

It is an arithmetic number, because the mean of its divisors is an integer number (51225615).

Almost surely, 2^204542413 is an apocalyptic number.

It is an amenable number.

204542413 is a deficient number, since it is larger than the sum of its proper divisors (360047).

204542413 is an equidigital number, since it uses as much as digits as its factorization.

204542413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 360046.

The product of its (nonzero) digits is 3840, while the sum is 25.

The square root of 204542413 is about 14301.8325049624. The cubic root of 204542413 is about 589.1978114620.

Adding to 204542413 its reverse (314245402), we get a palindrome (518787815).

The spelling of 204542413 in words is "two hundred four million, five hundred forty-two thousand, four hundred thirteen".