204040154 has 16 divisors (see below), whose sum is σ = 327709800. Its totient is φ = 94938624.

The previous prime is 204040129. The next prime is 204040217. The reversal of 204040154 is 451040402.

It can be written as a sum of positive squares in 4 ways, for example, as 105534529 + 98505625 = 10273^2 + 9925^2 .

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, 30689 + ... + 36740.

Almost surely, 2^204040154 is an apocalyptic number.

204040154 is a deficient number, since it is larger than the sum of its proper divisors (123669646).

204040154 is a wasteful number, since it uses less digits than its factorization.

204040154 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67537.

The product of its (nonzero) digits is 640, while the sum is 20.

The square root of 204040154 is about 14284.2624590841. The cubic root of 204040154 is about 588.7151528758.

Adding to 204040154 its reverse (451040402), we get a palindrome (655080556).

The spelling of 204040154 in words is "two hundred four million, forty thousand, one hundred fifty-four".