204240130436 has 12 divisors (see below), whose sum is σ = 366137795100. Its totient is φ = 99629331840.

The previous prime is 204240130417. The next prime is 204240130481. The reversal of 204240130436 is 634031042402.

It can be written as a sum of positive squares in 2 ways, for example, as 2633742400 + 201606388036 = 51320^2 + 449006^2 .

It is a junction number, because it is equal to n+sod(n) for n = 204240130399 and 204240130408.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 622683161 + ... + 622683488.

It is an arithmetic number, because the mean of its divisors is an integer number (30511482925).

Almost surely, 2^204240130436 is an apocalyptic number.

It is an amenable number.

204240130436 is a deficient number, since it is larger than the sum of its proper divisors (161897664664).

204240130436 is a wasteful number, since it uses less digits than its factorization.

204240130436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1245366694 (or 1245366692 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 29.

Adding to 204240130436 its reverse (634031042402), we get a palindrome (838271172838).

The spelling of 204240130436 in words is "two hundred four billion, two hundred forty million, one hundred thirty thousand, four hundred thirty-six".