242401220 has 12 divisors (see below), whose sum is σ = 509042604. Its totient is φ = 96960480.

The previous prime is 242401219. The next prime is 242401253. The reversal of 242401220 is 22104242.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 140754496 + 101646724 = 11864^2 + 10082^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6060011 + ... + 6060050.

It is an arithmetic number, because the mean of its divisors is an integer number (42420217).

Almost surely, 2^242401220 is an apocalyptic number.

242401220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

242401220 is an abundant number, since it is smaller than the sum of its proper divisors (266641384).

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

242401220 is a wasteful number, since it uses less digits than its factorization.

242401220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12120070 (or 12120068 counting only the distinct ones).

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

The square root of 242401220 is about 15569.2395446920. The cubic root of 242401220 is about 623.5121687167.

Adding to 242401220 its reverse (22104242), we get a palindrome (264505462).

The spelling of 242401220 in words is "two hundred forty-two million, four hundred one thousand, two hundred twenty".