204242432245 has 8 divisors (see below), whose sum is σ = 247617629784. Its totient is φ = 161709471744.

The previous prime is 204242432209. The next prime is 204242432293. The reversal of 204242432245 is 542234242402.

It can be written as a sum of positive squares in 4 ways, for example, as 2150826129 + 202091606116 = 46377^2 + 449546^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 204242432245 - 2¹³ = 204242424053 is a prime.

It is a super-2 number, since 2×204242432245² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 204242432245.

It is a congruent number.

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, 210558724 + ... + 210559693.

It is an arithmetic number, because the mean of its divisors is an integer number (30952203723).

Almost surely, 2^204242432245 is an apocalyptic number.

It is an amenable number.

204242432245 is a deficient number, since it is larger than the sum of its proper divisors (43375197539).

204242432245 is an equidigital number, since it uses as much as digits as its factorization.

204242432245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 421118519.

The product of its (nonzero) digits is 122880, while the sum is 34.

Adding to 204242432245 its reverse (542234242402), we get a palindrome (746476674647).

The spelling of 204242432245 in words is "two hundred four billion, two hundred forty-two million, four hundred thirty-two thousand, two hundred forty-five".