242287220 has 24 divisors (see below), whose sum is σ = 581489664. Its totient is φ = 83069856.

The previous prime is 242287193. The next prime is 242287223. The reversal of 242287220 is 22782242.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (242287223) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 865172 + ... + 865451.

It is an arithmetic number, because the mean of its divisors is an integer number (24228736).

Almost surely, 2^242287220 is an apocalyptic number.

242287220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

242287220 is an abundant number, since it is smaller than the sum of its proper divisors (339202444).

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

242287220 is a wasteful number, since it uses less digits than its factorization.

242287220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1730639 (or 1730637 counting only the distinct ones).

The product of its (nonzero) digits is 7168, while the sum is 29.

The square root of 242287220 is about 15565.5780490157. The cubic root of 242287220 is about 623.4144085747.

The spelling of 242287220 in words is "two hundred forty-two million, two hundred eighty-seven thousand, two hundred twenty".