204532421245 has 8 divisors (see below), whose sum is σ = 245495523384. Its totient is φ = 163588191744.

The previous prime is 204532421239. The next prime is 204532421273. The reversal of 204532421245 is 542124235402.

It can be written as a sum of positive squares in 4 ways, for example, as 6134335684 + 198398085561 = 78322^2 + 445419^2 .

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 204532421245 - 2¹⁷ = 204532290173 is a prime.

It is a super-2 number, since 2×204532421245² (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 204532421245.

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, 4694304 + ... + 4737673.

It is an arithmetic number, because the mean of its divisors is an integer number (30686940423).

Almost surely, 2^204532421245 is an apocalyptic number.

It is an amenable number.

204532421245 is a deficient number, since it is larger than the sum of its proper divisors (40963102139).

204532421245 is an equidigital number, since it uses as much as digits as its factorization.

204532421245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9436319.

The product of its (nonzero) digits is 76800, while the sum is 34.

Adding to 204532421245 its reverse (542124235402), we get a palindrome (746656656647).

The spelling of 204532421245 in words is "two hundred four billion, five hundred thirty-two million, four hundred twenty-one thousand, two hundred forty-five".