202421425720 has 32 divisors (see below), whose sum is σ = 455551578720. Its totient is φ = 80950193280.

The previous prime is 202421425709. The next prime is 202421425721. The reversal of 202421425720 is 27524124202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202421425721) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 395151 + ... + 748990.

It is an arithmetic number, because the mean of its divisors is an integer number (14235986835).

Almost surely, 2^202421425720 is an apocalyptic number.

202421425720 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

202421425720 is an abundant number, since it is smaller than the sum of its proper divisors (253130153000).

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

202421425720 is a wasteful number, since it uses less digits than its factorization.

202421425720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1148575 (or 1148571 counting only the distinct ones).

The product of its (nonzero) digits is 17920, while the sum is 31.

Adding to 202421425720 its reverse (27524124202), we get a palindrome (229945549922).

The spelling of 202421425720 in words is "two hundred two billion, four hundred twenty-one million, four hundred twenty-five thousand, seven hundred twenty".