202124404 has 18 divisors (see below), whose sum is σ = 360537590. Its totient is φ = 99149856.

The previous prime is 202124399. The next prime is 202124411. The reversal of 202124404 is 404421202.

It can be written as a sum of positive squares in 3 ways, for example, as 97061904 + 105062500 = 9852^2 + 10250^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2242 + ... + 20230.

Almost surely, 2^202124404 is an apocalyptic number.

It is an amenable number.

202124404 is a deficient number, since it is larger than the sum of its proper divisors (158413186).

202124404 is a wasteful number, since it uses less digits than its factorization.

202124404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18099 (or 18044 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 19.

The square root of 202124404 is about 14217.0462473750. The cubic root of 202124404 is about 586.8668576156.

Adding to 202124404 its reverse (404421202), we get a palindrome (606545606).

The spelling of 202124404 in words is "two hundred two million, one hundred twenty-four thousand, four hundred four".