421444023000 has 1024 divisors, whose sum is σ = 1813660692480. Its totient is φ = 78630912000.

The previous prime is 421444022957. The next prime is 421444023017. The reversal of 421444023000 is 320444124.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 255 ways as a sum of consecutive naturals, for example, 111109104 + ... + 111112896.

It is an arithmetic number, because the mean of its divisors is an integer number (1771153020).

Almost surely, 2^421444023000 is an apocalyptic number.

421444023000 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 421444023000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (906830346240).

421444023000 is an abundant number, since it is smaller than the sum of its proper divisors (1392216669480).

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

421444023000 is a wasteful number, since it uses less digits than its factorization.

421444023000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3885 (or 3871 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 24.

Adding to 421444023000 its reverse (320444124), we get a palindrome (421764467124).

The spelling of 421444023000 in words is "four hundred twenty-one billion, four hundred forty-four million, twenty-three thousand".