420238020 has 48 divisors (see below), whose sum is σ = 1180872000. Its totient is φ = 111662976.

The previous prime is 420238019. The next prime is 420238057. The reversal of 420238020 is 20832024.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4606 + ... + 29354.

It is an arithmetic number, because the mean of its divisors is an integer number (24601500).

Almost surely, 2^420238020 is an apocalyptic number.

It is an amenable number.

420238020 is an abundant number, since it is smaller than the sum of its proper divisors (760633980).

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

420238020 is a wasteful number, since it uses less digits than its factorization.

420238020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25044 (or 25042 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 420238020 is about 20499.7078027956. The cubic root of 420238020 is about 749.0286803717.

The spelling of 420238020 in words is "four hundred twenty million, two hundred thirty-eight thousand, twenty".