204505402 has 4 divisors (see below), whose sum is σ = 306758106. Its totient is φ = 102252700.

The previous prime is 204505333. The next prime is 204505403.

204505402 is nontrivially palindromic in base 10.

204505402 is digitally balanced in base 3, 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.

It can be written as a sum of positive squares in only one way, i.e., 174266401 + 30239001 = 13201^2 + 5499^2 .

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (204505403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51126349 + ... + 51126352.

Almost surely, 2^204505402 is an apocalyptic number.

204505402 is a deficient number, since it is larger than the sum of its proper divisors (102252704).

204505402 is a wasteful number, since it uses less digits than its factorization.

204505402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102252703.

The product of its (nonzero) digits is 1600, while the sum is 22.

The square root of 204505402 is about 14300.5385213285. The cubic root of 204505402 is about 589.1622717822.

It can be divided in two parts, 20450 and 5402, that added together give a palindrome (25852).

The spelling of 204505402 in words is "two hundred four million, five hundred five thousand, four hundred two".