204125242321 has 32 divisors (see below), whose sum is σ = 274148582400. Its totient is φ = 146781391680.

The previous prime is 204125242309. The next prime is 204125242357. The reversal of 204125242321 is 123242521402.

It is not a de Polignac number, because 204125242321 - 2⁵ = 204125242289 is a prime.

It is a super-2 number, since 2×204125242321² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 204125242321.

It is not an unprimeable number, because it can be changed into a prime (204125242421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3715470 + ... + 3770008.

It is an arithmetic number, because the mean of its divisors is an integer number (8567143200).

Almost surely, 2^204125242321 is an apocalyptic number.

It is an amenable number.

204125242321 is a deficient number, since it is larger than the sum of its proper divisors (70023340079).

204125242321 is a wasteful number, since it uses less digits than its factorization.

204125242321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58309.

The product of its (nonzero) digits is 7680, while the sum is 28.

Adding to 204125242321 its reverse (123242521402), we get a palindrome (327367763723).

The spelling of 204125242321 in words is "two hundred four billion, one hundred twenty-five million, two hundred forty-two thousand, three hundred twenty-one".