201001242 has 64 divisors (see below), whose sum is σ = 448003584. Its totient is φ = 59719680.

The previous prime is 201001219. The next prime is 201001243. The reversal of 201001242 is 242100102.

201001242 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (201001243) 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, 741567 + ... + 741837.

It is an arithmetic number, because the mean of its divisors is an integer number (7000056).

Almost surely, 2^201001242 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 201001242, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (224001792).

201001242 is an abundant number, since it is smaller than the sum of its proper divisors (247002342).

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

201001242 is a wasteful number, since it uses less digits than its factorization.

201001242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 583.

The product of its (nonzero) digits is 32, while the sum is 12.

The square root of 201001242 is about 14177.4906806529. The cubic root of 201001242 is about 585.7778067875. Note that the first 3 decimals are identical.

Adding to 201001242 its reverse (242100102), we get a palindrome (443101344).

The spelling of 201001242 in words is "two hundred one million, one thousand, two hundred forty-two".