42421315520 has 28 divisors (see below), whose sum is σ = 101015758344. Its totient is φ = 16968526080.

The previous prime is 42421315493. The next prime is 42421315549. The reversal of 42421315520 is 2551312424.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 66282986 + ... + 66283625.

Almost surely, 2^42421315520 is an apocalyptic number.

42421315520 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

42421315520 is an abundant number, since it is smaller than the sum of its proper divisors (58594442824).

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

42421315520 is a wasteful number, since it uses less digits than its factorization.

42421315520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132566628 (or 132566618 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 29.

Adding to 42421315520 its reverse (2551312424), we get a palindrome (44972627944).

The spelling of 42421315520 in words is "forty-two billion, four hundred twenty-one million, three hundred fifteen thousand, five hundred twenty".