202421441404 has 96 divisors (see below), whose sum is σ = 465946629120. Its totient is φ = 74663672832.

The previous prime is 202421441389. The next prime is 202421441429. The reversal of 202421441404 is 404144124202.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 509257 + ... + 814975.

It is an arithmetic number, because the mean of its divisors is an integer number (4853610720).

Almost surely, 2^202421441404 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 202421441404, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (232973314560).

202421441404 is an abundant number, since it is smaller than the sum of its proper divisors (263525187716).

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

202421441404 is a wasteful number, since it uses less digits than its factorization.

202421441404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 305867 (or 305865 counting only the distinct ones).

The product of its (nonzero) digits is 8192, while the sum is 28.

Adding to 202421441404 its reverse (404144124202), we get a palindrome (606565565606).

The spelling of 202421441404 in words is "two hundred two billion, four hundred twenty-one million, four hundred forty-one thousand, four hundred four".