202423124420 has 24 divisors (see below), whose sum is σ = 463732976448. Its totient is φ = 73608408800.

The previous prime is 202423124419. The next prime is 202423124429. The reversal of 202423124420 is 24421324202.

It is a self number, because there is not a number n which added to its sum of digits gives 202423124420.

It is not an unprimeable number, because it can be changed into a prime (202423124429) 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, 460052336 + ... + 460052775.

It is an arithmetic number, because the mean of its divisors is an integer number (19322207352).

Almost surely, 2^202423124420 is an apocalyptic number.

202423124420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

202423124420 is an abundant number, since it is smaller than the sum of its proper divisors (261309852028).

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

202423124420 is a wasteful number, since it uses less digits than its factorization.

202423124420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 920105131 (or 920105129 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 26.

Adding to 202423124420 its reverse (24421324202), we get a palindrome (226844448622).

The spelling of 202423124420 in words is "two hundred two billion, four hundred twenty-three million, one hundred twenty-four thousand, four hundred twenty".