420193684428 has 24 divisors (see below), whose sum is σ = 1120516492032. Its totient is φ = 120055338384.

The previous prime is 420193684373. The next prime is 420193684441. The reversal of 420193684428 is 824486391024.

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 7 ways as a sum of consecutive naturals, for example, 2501152800 + ... + 2501152967.

It is an arithmetic number, because the mean of its divisors is an integer number (46688187168).

Almost surely, 2^420193684428 is an apocalyptic number.

It is an amenable number.

420193684428 is an abundant number, since it is smaller than the sum of its proper divisors (700322807604).

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

420193684428 is a wasteful number, since it uses less digits than its factorization.

420193684428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5002305781 (or 5002305779 counting only the distinct ones).

The product of its (nonzero) digits is 2654208, while the sum is 51.

The spelling of 420193684428 in words is "four hundred twenty billion, one hundred ninety-three million, six hundred eighty-four thousand, four hundred twenty-eight".