203030000442 has 64 divisors (see below), whose sum is σ = 467324121600. Its totient is φ = 65260601280.

The previous prime is 203030000419. The next prime is 203030000447. The reversal of 203030000442 is 244000030302.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (203030000447) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1166767 + ... + 1329437.

It is an arithmetic number, because the mean of its divisors is an integer number (7301939400).

Almost surely, 2^203030000442 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 203030000442, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (233662060800).

203030000442 is an abundant number, since it is smaller than the sum of its proper divisors (264294121158).

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

203030000442 is a wasteful number, since it uses less digits than its factorization.

203030000442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163508 (or 163502 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 18.

Adding to 203030000442 its reverse (244000030302), we get a palindrome (447030030744).

The spelling of 203030000442 in words is "two hundred three billion, thirty million, four hundred forty-two", and thus it is an aban number.