202404400420 has 24 divisors (see below), whose sum is σ = 447420254400. Its totient is φ = 76700614752.

The previous prime is 202404400411. The next prime is 202404400447. The reversal of 202404400420 is 24004404202.

It is a junction number, because it is equal to n+sod(n) for n = 202404400391 and 202404400400.

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, 266321200 + ... + 266321959.

It is an arithmetic number, because the mean of its divisors is an integer number (18642510600).

Almost surely, 2^202404400420 is an apocalyptic number.

202404400420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

202404400420 is an abundant number, since it is smaller than the sum of its proper divisors (245015853980).

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

202404400420 is a wasteful number, since it uses less digits than its factorization.

202404400420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 532643187 (or 532643185 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 22.

Adding to 202404400420 its reverse (24004404202), we get a palindrome (226408804622).

The spelling of 202404400420 in words is "two hundred two billion, four hundred four million, four hundred thousand, four hundred twenty".