201243330323442 has 192 divisors, whose sum is σ = 492630323902080. Its totient is φ = 60849927198720.

The previous prime is 201243330323419. The next prime is 201243330323447. The reversal of 201243330323442 is 244323033342102.

201243330323442 is a `hidden beast` number, since 2 + 0 + 1 + 2 + 4 + 3 + 3 + 303 + 2 + 344 + 2 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 201243330323397 and 201243330323406.

It is not an unprimeable number, because it can be changed into a prime (201243330323447) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 20753148738 + ... + 20753158434.

It is an arithmetic number, because the mean of its divisors is an integer number (2565782936990).

Almost surely, 2^{201243330323442} is an apocalyptic number.

201243330323442 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 201243330323442, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (246315161951040).

201243330323442 is an abundant number, since it is smaller than the sum of its proper divisors (291386993578638).

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

201243330323442 is a wasteful number, since it uses less digits than its factorization.

201243330323442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16326 (or 16309 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 36.

Adding to 201243330323442 its reverse (244323033342102), we get a palindrome (445566363665544).

The spelling of 201243330323442 in words is "two hundred one trillion, two hundred forty-three billion, three hundred thirty million, three hundred twenty-three thousand, four hundred forty-two".