202421100424 has 32 divisors (see below), whose sum is σ = 389831661720. Its totient is φ = 98466471936.

The previous prime is 202421100421. The next prime is 202421100433. The reversal of 202421100424 is 424001124202.

It can be written as a sum of positive squares in 4 ways, for example, as 179876077924 + 22545022500 = 424118^2 + 150150^2 .

It is a junction number, because it is equal to n+sod(n) for n = 202421100395 and 202421100404.

It is not an unprimeable number, because it can be changed into a prime (202421100421) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4486522 + ... + 4531414.

Almost surely, 2^202421100424 is an apocalyptic number.

It is an amenable number.

202421100424 is a deficient number, since it is larger than the sum of its proper divisors (187410561296).

202421100424 is a wasteful number, since it uses less digits than its factorization.

202421100424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60169 (or 60165 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 22.

Adding to 202421100424 its reverse (424001124202), we get a palindrome (626422224626).

The spelling of 202421100424 in words is "two hundred two billion, four hundred twenty-one million, one hundred thousand, four hundred twenty-four".