420238582420 has 24 divisors (see below), whose sum is σ = 886354749000. Its totient is φ = 167361389952.

The previous prime is 420238582403. The next prime is 420238582453. The reversal of 420238582420 is 24285832024.

It can be written as a sum of positive squares in 4 ways, for example, as 164508115216 + 255730467204 = 405596^2 + 505698^2 .

It is a super-2 number, since 2×420238582420² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45872995 + ... + 45882154.

It is an arithmetic number, because the mean of its divisors is an integer number (36931447875).

Almost surely, 2^420238582420 is an apocalyptic number.

It is an amenable number.

420238582420 is an abundant number, since it is smaller than the sum of its proper divisors (466116166580).

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

420238582420 is a wasteful number, since it uses less digits than its factorization.

420238582420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91755387 (or 91755385 counting only the distinct ones).

The product of its (nonzero) digits is 245760, while the sum is 40.

The spelling of 420238582420 in words is "four hundred twenty billion, two hundred thirty-eight million, five hundred eighty-two thousand, four hundred twenty".