202420404 has 24 divisors (see below), whose sum is σ = 524793920. Its totient is φ = 67473432.

The previous prime is 202420391. The next prime is 202420487. The reversal of 202420404 is 404024202.

202420404 is a `hidden beast` number, since 20 + 242 + 0 + 404 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

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, 937024 + ... + 937239.

Almost surely, 2^202420404 is an apocalyptic number.

It is an amenable number.

202420404 is an abundant number, since it is smaller than the sum of its proper divisors (322373516).

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

202420404 is a wasteful number, since it uses less digits than its factorization.

202420404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1874276 (or 1874268 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 18.

The square root of 202420404 is about 14227.4524775168. The cubic root of 202420404 is about 587.1531958935.

Adding to 202420404 its reverse (404024202), we get a palindrome (606444606).

The spelling of 202420404 in words is "two hundred two million, four hundred twenty thousand, four hundred four".