421085824390 has 128 divisors (see below), whose sum is σ = 1026806906880. Its totient is φ = 120328675200.

The previous prime is 421085824363. The next prime is 421085824403. The reversal of 421085824390 is 93428580124.

It is a self number, because there is not a number n which added to its sum of digits gives 421085824390.

It is a congruent number.

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 63 ways as a sum of consecutive naturals, for example, 10702 + ... + 917761.

It is an arithmetic number, because the mean of its divisors is an integer number (8021928960).

Almost surely, 2^421085824390 is an apocalyptic number.

421085824390 is an abundant number, since it is smaller than the sum of its proper divisors (605721082490).

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

421085824390 is a wasteful number, since it uses less digits than its factorization.

421085824390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 928538.

The product of its (nonzero) digits is 552960, while the sum is 46.

The spelling of 421085824390 in words is "four hundred twenty-one billion, eighty-five million, eight hundred twenty-four thousand, three hundred ninety".