420520834674 has 24 divisors (see below), whose sum is σ = 916218585360. Its totient is φ = 139390517688.

The previous prime is 420520834649. The next prime is 420520834697. The reversal of 420520834674 is 476438025024.

It is a happy number.

420520834674 is a `hidden beast` number, since 4 + 2 + 0 + 520 + 83 + 46 + 7 + 4 = 666.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 65254512 + ... + 65260955.

It is an arithmetic number, because the mean of its divisors is an integer number (38175774390).

Almost surely, 2^420520834674 is an apocalyptic number.

420520834674 is an abundant number, since it is smaller than the sum of its proper divisors (495697750686).

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

420520834674 is a wasteful number, since it uses less digits than its factorization.

420520834674 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130515654 (or 130515651 counting only the distinct ones).

The product of its (nonzero) digits is 1290240, while the sum is 45.

Adding to 420520834674 its reverse (476438025024), we get a palindrome (896958859698).

The spelling of 420520834674 in words is "four hundred twenty billion, five hundred twenty million, eight hundred thirty-four thousand, six hundred seventy-four".