204010243420 has 96 divisors (see below), whose sum is σ = 455893945920. Its totient is φ = 76563701760.

The previous prime is 204010243417. The next prime is 204010243433. The reversal of 204010243420 is 24342010402.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 204010243391 and 204010243400.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2901804 + ... + 2971276.

It is an arithmetic number, because the mean of its divisors is an integer number (4748895270).

Almost surely, 2^204010243420 is an apocalyptic number.

204010243420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 204010243420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (227946972960).

204010243420 is an abundant number, since it is smaller than the sum of its proper divisors (251883702500).

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

204010243420 is a wasteful number, since it uses less digits than its factorization.

204010243420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69655 (or 69653 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 22.

Adding to 204010243420 its reverse (24342010402), we get a palindrome (228352253822).

The spelling of 204010243420 in words is "two hundred four billion, ten million, two hundred forty-three thousand, four hundred twenty".