420521523204140 has 96 divisors (see below), whose sum is σ = 912314287987200. Its totient is φ = 162651806760960.

The previous prime is 420521523204121. The next prime is 420521523204173. The reversal of 420521523204140 is 41402325125024.

It is a super-2 number, since 2×420521523204140² (a number of 30 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 420521523204140.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 15382856552 + ... + 15382883888.

It is an arithmetic number, because the mean of its divisors is an integer number (9503273833200).

Almost surely, 2^{420521523204140} is an apocalyptic number.

It is an amenable number.

420521523204140 is an abundant number, since it is smaller than the sum of its proper divisors (491792764783060).

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

420521523204140 is a wasteful number, since it uses less digits than its factorization.

420521523204140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46395 (or 46393 counting only the distinct ones).

The product of its (nonzero) digits is 76800, while the sum is 35.

Adding to 420521523204140 its reverse (41402325125024), we get a palindrome (461923848329164).

The spelling of 420521523204140 in words is "four hundred twenty trillion, five hundred twenty-one billion, five hundred twenty-three million, two hundred four thousand, one hundred forty".