420441015520 has 48 divisors (see below), whose sum is σ = 997068774240. Its totient is φ = 167536935424.

The previous prime is 420441015517. The next prime is 420441015529. The reversal of 420441015520 is 25510144024.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420441015529) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 4953655 + ... + 5037814.

It is an arithmetic number, because the mean of its divisors is an integer number (20772266130).

Almost surely, 2^420441015520 is an apocalyptic number.

420441015520 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

420441015520 is an abundant number, since it is smaller than the sum of its proper divisors (576627758720).

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

420441015520 is a wasteful number, since it uses less digits than its factorization.

420441015520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9991747 (or 9991739 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 28.

Adding to 420441015520 its reverse (25510144024), we get a palindrome (445951159544).

The spelling of 420441015520 in words is "four hundred twenty billion, four hundred forty-one million, fifteen thousand, five hundred twenty".