204240395 has 4 divisors (see below), whose sum is σ = 245088480. Its totient is φ = 163392312.

The previous prime is 204240373. The next prime is 204240403. The reversal of 204240395 is 593042402.

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

It is a cyclic number.

It is not a de Polignac number, because 204240395 - 2¹⁴ = 204224011 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20424035 + ... + 20424044.

It is an arithmetic number, because the mean of its divisors is an integer number (61272120).

Almost surely, 2^204240395 is an apocalyptic number.

204240395 is a deficient number, since it is larger than the sum of its proper divisors (40848085).

204240395 is an equidigital number, since it uses as much as digits as its factorization.

204240395 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40848084.

The product of its (nonzero) digits is 8640, while the sum is 29.

The square root of 204240395 is about 14291.2698875922. The cubic root of 204240395 is about 588.9076744070.

Adding to 204240395 its reverse (593042402), we get a palindrome (797282797).

The spelling of 204240395 in words is "two hundred four million, two hundred forty thousand, three hundred ninety-five".