201220242 has 8 divisors (see below), whose sum is σ = 402440496. Its totient is φ = 67073412.

The previous prime is 201220223. The next prime is 201220247. The reversal of 201220242 is 242022102.

It is a sphenic number, since it is the product of 3 distinct primes.

201220242 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (201220247) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16768348 + ... + 16768359.

It is an arithmetic number, because the mean of its divisors is an integer number (50305062).

Almost surely, 2^201220242 is an apocalyptic number.

201220242 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

201220242 is a wasteful number, since it uses less digits than its factorization.

201220242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33536712.

The product of its (nonzero) digits is 128, while the sum is 15.

The square root of 201220242 is about 14185.2120886506. The cubic root of 201220242 is about 585.9904734286.

Adding to 201220242 its reverse (242022102), we get a palindrome (443242344).

The spelling of 201220242 in words is "two hundred one million, two hundred twenty thousand, two hundred forty-two".