242530220 has 24 divisors (see below), whose sum is σ = 509866224. Its totient is φ = 96906816.

The previous prime is 242530217. The next prime is 242530229. The reversal of 242530220 is 22035242.

It is a super-2 number, since 2×242530220² = 117641815226496800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 242530192 and 242530201.

It is not an unprimeable number, because it can be changed into a prime (242530229) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 13859 + ... + 26021.

It is an arithmetic number, because the mean of its divisors is an integer number (21244426).

Almost surely, 2^242530220 is an apocalyptic number.

242530220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

242530220 is an abundant number, since it is smaller than the sum of its proper divisors (267336004).

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

242530220 is a wasteful number, since it uses less digits than its factorization.

242530220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13169 (or 13167 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 20.

The square root of 242530220 is about 15573.3817778927. The cubic root of 242530220 is about 623.6227550768.

Adding to 242530220 its reverse (22035242), we get a palindrome (264565462).

The spelling of 242530220 in words is "two hundred forty-two million, five hundred thirty thousand, two hundred twenty".