420452522056 has 64 divisors (see below), whose sum is σ = 920342880000. Its totient is φ = 176349000960.

The previous prime is 420452521999. The next prime is 420452522081. The reversal of 420452522056 is 650225254024.

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 15 ways as a sum of consecutive naturals, for example, 370530 + ... + 989038.

It is an arithmetic number, because the mean of its divisors is an integer number (14380357500).

Almost surely, 2^420452522056 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 420452522056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (460171440000).

420452522056 is an abundant number, since it is smaller than the sum of its proper divisors (499890357944).

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

420452522056 is a wasteful number, since it uses less digits than its factorization.

420452522056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 618782 (or 618778 counting only the distinct ones).

The product of its (nonzero) digits is 192000, while the sum is 37.

The spelling of 420452522056 in words is "four hundred twenty billion, four hundred fifty-two million, five hundred twenty-two thousand, fifty-six".