204210323420 has 24 divisors (see below), whose sum is σ = 435871873248. Its totient is φ = 80345044800.

The previous prime is 204210323413. The next prime is 204210323479. The reversal of 204210323420 is 24323012402.

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, 83691536 + ... + 83693975.

It is an arithmetic number, because the mean of its divisors is an integer number (18161328052).

Almost surely, 2^204210323420 is an apocalyptic number.

204210323420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

204210323420 is an abundant number, since it is smaller than the sum of its proper divisors (231661549828).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

204210323420 is a wasteful number, since it uses less digits than its factorization.

204210323420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 167385581 (or 167385579 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 23.

Adding to 204210323420 its reverse (24323012402), we get a palindrome (228533335822).

The spelling of 204210323420 in words is "two hundred four billion, two hundred ten million, three hundred twenty-three thousand, four hundred twenty".