242144220 has 24 divisors (see below), whose sum is σ = 678003984. Its totient is φ = 64571776.

The previous prime is 242144183. The next prime is 242144239. The reversal of 242144220 is 22441242.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2017809 + ... + 2017928.

It is an arithmetic number, because the mean of its divisors is an integer number (28250166).

Almost surely, 2^242144220 is an apocalyptic number.

242144220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

242144220 is an abundant number, since it is smaller than the sum of its proper divisors (435859764).

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

242144220 is a wasteful number, since it uses less digits than its factorization.

242144220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4035749 (or 4035747 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 21.

The square root of 242144220 is about 15560.9839020545. The cubic root of 242144220 is about 623.2917362565.

Adding to 242144220 its reverse (22441242), we get a palindrome (264585462).

The spelling of 242144220 in words is "two hundred forty-two million, one hundred forty-four thousand, two hundred twenty".