421824213078 has 8 divisors (see below), whose sum is σ = 843648426168. Its totient is φ = 140608071024.

The previous prime is 421824213043. The next prime is 421824213137. The reversal of 421824213078 is 870312428124.

It is a sphenic number, since it is the product of 3 distinct primes.

421824213078 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35152017751 + ... + 35152017762.

It is an arithmetic number, because the mean of its divisors is an integer number (105456053271).

Almost surely, 2^421824213078 is an apocalyptic number.

421824213078 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

421824213078 is a wasteful number, since it uses less digits than its factorization.

421824213078 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70304035518.

The product of its (nonzero) digits is 172032, while the sum is 42.

The spelling of 421824213078 in words is "four hundred twenty-one billion, eight hundred twenty-four million, two hundred thirteen thousand, seventy-eight".