204013250421 has 16 divisors (see below), whose sum is σ = 279626671104. Its totient is φ = 132211099584.

The previous prime is 204013250377. The next prime is 204013250491. The reversal of 204013250421 is 124052310402.

It is not a de Polignac number, because 204013250421 - 2¹⁰ = 204013249397 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 204013250391 and 204013250400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204013250491) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 724770 + ... + 966083.

It is an arithmetic number, because the mean of its divisors is an integer number (17476666944).

Almost surely, 2^204013250421 is an apocalyptic number.

It is an amenable number.

204013250421 is a deficient number, since it is larger than the sum of its proper divisors (75613420683).

204013250421 is a wasteful number, since it uses less digits than its factorization.

204013250421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1691980.

The product of its (nonzero) digits is 1920, while the sum is 24.

Adding to 204013250421 its reverse (124052310402), we get a palindrome (328065560823).

The spelling of 204013250421 in words is "two hundred four billion, thirteen million, two hundred fifty thousand, four hundred twenty-one".