421021443000 has 64 divisors (see below), whose sum is σ = 1313586911520. Its totient is φ = 112272384000.

The previous prime is 421021442993. The next prime is 421021443019. The reversal of 421021443000 is 344120124.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 70167241 + ... + 70173240.

Almost surely, 2^421021443000 is an apocalyptic number.

421021443000 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

421021443000 is an abundant number, since it is smaller than the sum of its proper divisors (892565468520).

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

421021443000 is a wasteful number, since it uses less digits than its factorization.

421021443000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140340505 (or 140340491 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 21.

Adding to 421021443000 its reverse (344120124), we get a palindrome (421365563124).

The spelling of 421021443000 in words is "four hundred twenty-one billion, twenty-one million, four hundred forty-three thousand".