203842421068 has 72 divisors (see below), whose sum is σ = 424875746736. Its totient is φ = 85527911040.

The previous prime is 203842421023. The next prime is 203842421089. The reversal of 203842421068 is 860124248302.

It is a self number, because there is not a number n which added to its sum of digits gives 203842421068.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 786480 + ... + 1013032.

It is an arithmetic number, because the mean of its divisors is an integer number (5901052038).

Almost surely, 2^203842421068 is an apocalyptic number.

It is an amenable number.

203842421068 is an abundant number, since it is smaller than the sum of its proper divisors (221033325668).

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

203842421068 is a wasteful number, since it uses less digits than its factorization.

203842421068 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 226616 (or 226579 counting only the distinct ones).

The product of its (nonzero) digits is 147456, while the sum is 40.

The spelling of 203842421068 in words is "two hundred three billion, eight hundred forty-two million, four hundred twenty-one thousand, sixty-eight".