204121024430 has 16 divisors (see below), whose sum is σ = 367567305840. Its totient is φ = 81615196032.

The previous prime is 204121024397. The next prime is 204121024453. The reversal of 204121024430 is 34420121402.

It is a super-2 number, since 2×204121024430² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 204121024396 and 204121024405.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4125899 + ... + 4175078.

It is an arithmetic number, because the mean of its divisors is an integer number (22972956615).

Almost surely, 2^204121024430 is an apocalyptic number.

204121024430 is a deficient number, since it is larger than the sum of its proper divisors (163446281410).

204121024430 is a wasteful number, since it uses less digits than its factorization.

204121024430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8303443.

The product of its (nonzero) digits is 1536, while the sum is 23.

Adding to 204121024430 its reverse (34420121402), we get a palindrome (238541145832).

The spelling of 204121024430 in words is "two hundred four billion, one hundred twenty-one million, twenty-four thousand, four hundred thirty".