204042424420 has 12 divisors (see below), whose sum is σ = 428489091324. Its totient is φ = 81616969760.

The previous prime is 204042424409. The next prime is 204042424433. The reversal of 204042424420 is 24424240402.

It can be written as a sum of positive squares in 2 ways, for example, as 53678402596 + 150364021824 = 231686^2 + 387768^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5101060591 + ... + 5101060630.

It is an arithmetic number, because the mean of its divisors is an integer number (35707424277).

Almost surely, 2^204042424420 is an apocalyptic number.

204042424420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

204042424420 is an abundant number, since it is smaller than the sum of its proper divisors (224446666904).

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

204042424420 is a wasteful number, since it uses less digits than its factorization.

204042424420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10202121230 (or 10202121228 counting only the distinct ones).

The product of its (nonzero) digits is 16384, while the sum is 28.

Adding to 204042424420 its reverse (24424240402), we get a palindrome (228466664822).

The spelling of 204042424420 in words is "two hundred four billion, forty-two million, four hundred twenty-four thousand, four hundred twenty".