201241540240 has 80 divisors (see below), whose sum is σ = 504152607168. Its totient is φ = 74264053248.

The previous prime is 201241540219. The next prime is 201241540249. The reversal of 201241540240 is 42045142102.

It is a tau number, because it is divible by the number of its divisors (80).

It is not an unprimeable number, because it can be changed into a prime (201241540249) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1889859 + ... + 1993501.

Almost surely, 2^201241540240 is an apocalyptic number.

201241540240 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 201241540240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (252076303584).

201241540240 is an abundant number, since it is smaller than the sum of its proper divisors (302911066928).

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

201241540240 is a wasteful number, since it uses less digits than its factorization.

201241540240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105536 (or 105530 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 25.

Adding to 201241540240 its reverse (42045142102), we get a palindrome (243286682342).

The spelling of 201241540240 in words is "two hundred one billion, two hundred forty-one million, five hundred forty thousand, two hundred forty".