203423200420 has 24 divisors (see below), whose sum is σ = 466024059648. Its totient is φ = 73972072800.

The previous prime is 203423200363. The next prime is 203423200433. The reversal of 203423200420 is 24002324302.

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 = 203423200391 and 203423200400.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 462325236 + ... + 462325675.

It is an arithmetic number, because the mean of its divisors is an integer number (19417669152).

Almost surely, 2^203423200420 is an apocalyptic number.

203423200420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

203423200420 is an abundant number, since it is smaller than the sum of its proper divisors (262600859228).

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

203423200420 is a wasteful number, since it uses less digits than its factorization.

203423200420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 924650931 (or 924650929 counting only the distinct ones).

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

Adding to 203423200420 its reverse (24002324302), we get a palindrome (227425524722).

The spelling of 203423200420 in words is "two hundred three billion, four hundred twenty-three million, two hundred thousand, four hundred twenty".