420730663020 has 192 divisors, whose sum is σ = 1202569339776. Its totient is φ = 109884211200.

The previous prime is 420730662991. The next prime is 420730663079. The reversal of 420730663020 is 20366037024.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 700050720 + ... + 700051320.

It is an arithmetic number, because the mean of its divisors is an integer number (6263381978).

Almost surely, 2^420730663020 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 420730663020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (601284669888).

420730663020 is an abundant number, since it is smaller than the sum of its proper divisors (781838676756).

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

420730663020 is a wasteful number, since it uses less digits than its factorization.

420730663020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1540 (or 1538 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 33.

The spelling of 420730663020 in words is "four hundred twenty billion, seven hundred thirty million, six hundred sixty-three thousand, twenty".