202423043020 has 48 divisors (see below), whose sum is σ = 467117769888. Its totient is φ = 73071080960.

The previous prime is 202423043003. The next prime is 202423043029. The reversal of 202423043020 is 20340324202.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a junction number, because it is equal to n+sod(n) for n = 202423042982 and 202423043000.

It is not an unprimeable number, because it can be changed into a prime (202423043029) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3327907 + ... + 3388186.

It is an arithmetic number, because the mean of its divisors is an integer number (9731620206).

Almost surely, 2^202423043020 is an apocalyptic number.

202423043020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

202423043020 is an abundant number, since it is smaller than the sum of its proper divisors (264694726868).

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

202423043020 is a wasteful number, since it uses less digits than its factorization.

202423043020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6716250 (or 6716248 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 22.

Adding to 202423043020 its reverse (20340324202), we get a palindrome (222763367222).

The spelling of 202423043020 in words is "two hundred two billion, four hundred twenty-three million, forty-three thousand, twenty".