201242240 has 32 divisors (see below), whose sum is σ = 481096260. Its totient is φ = 80496640.

The previous prime is 201242221. The next prime is 201242257. The reversal of 201242240 is 42242102.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 186923584 + 14318656 = 13672^2 + 3784^2 .

It is a tau number, because it is divible by the number of its divisors (32).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 156581 + ... + 157860.

Almost surely, 2^201242240 is an apocalyptic number.

201242240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

201242240 is an abundant number, since it is smaller than the sum of its proper divisors (279854020).

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

201242240 is an equidigital number, since it uses as much as digits as its factorization.

201242240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 314460 (or 314448 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 17.

The square root of 201242240 is about 14185.9874524123. The cubic root of 201242240 is about 586.0118267288.

Adding to 201242240 its reverse (42242102), we get a palindrome (243484342).

The spelling of 201242240 in words is "two hundred one million, two hundred forty-two thousand, two hundred forty".