421054816 has 48 divisors (see below), whose sum is σ = 1020255264. Its totient is φ = 166569984.

The previous prime is 421054693. The next prime is 421054831. The reversal of 421054816 is 618450124.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 69385 + ... + 75208.

It is an arithmetic number, because the mean of its divisors is an integer number (21255318).

Almost surely, 2^421054816 is an apocalyptic number.

It is an amenable number.

421054816 is an abundant number, since it is smaller than the sum of its proper divisors (599200448).

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

421054816 is a wasteful number, since it uses less digits than its factorization.

421054816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144623 (or 144615 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 31.

The square root of 421054816 is about 20519.6202693910. The cubic root of 421054816 is about 749.5136497231.

The spelling of 421054816 in words is "four hundred twenty-one million, fifty-four thousand, eight hundred sixteen".