242556220 has 24 divisors (see below), whose sum is σ = 511008624. Its totient is φ = 96710016.

The previous prime is 242556217. The next prime is 242556253. The reversal of 242556220 is 22655242.

242556220 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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, 13114 + ... + 25633.

It is an arithmetic number, because the mean of its divisors is an integer number (21292026).

Almost surely, 2^242556220 is an apocalyptic number.

242556220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

242556220 is an abundant number, since it is smaller than the sum of its proper divisors (268452404).

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

242556220 is a wasteful number, since it uses less digits than its factorization.

242556220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39069 (or 39067 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 28.

The square root of 242556220 is about 15574.2165131990. The cubic root of 242556220 is about 623.6450390521.

The spelling of 242556220 in words is "two hundred forty-two million, five hundred fifty-six thousand, two hundred twenty".