203421442000 has 240 divisors, whose sum is σ = 590645053440. Its totient is φ = 67493664000.

The previous prime is 203421441913. The next prime is 203421442019. The reversal of 203421442000 is 244124302.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3004521 + ... + 3071479.

It is an arithmetic number, because the mean of its divisors is an integer number (2461021056).

Almost surely, 2^203421442000 is an apocalyptic number.

203421442000 is a gapful number since it is divisible by the number (20) 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 203421442000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (295322526720).

203421442000 is an abundant number, since it is smaller than the sum of its proper divisors (387223611440).

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

203421442000 is a wasteful number, since it uses less digits than its factorization.

203421442000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67027 (or 67004 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 22.

Adding to 203421442000 its reverse (244124302), we get a palindrome (203665566302).

The spelling of 203421442000 in words is "two hundred three billion, four hundred twenty-one million, four hundred forty-two thousand".