242920220 has 24 divisors (see below), whose sum is σ = 511334208. Its totient is φ = 96939200.

The previous prime is 242920217. The next prime is 242920231. The reversal of 242920220 is 22029242.

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, 5471 + ... + 22710.

It is an arithmetic number, because the mean of its divisors is an integer number (21305592).

Almost surely, 2^242920220 is an apocalyptic number.

242920220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

242920220 is an abundant number, since it is smaller than the sum of its proper divisors (268413988).

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

242920220 is a wasteful number, since it uses less digits than its factorization.

242920220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28621 (or 28619 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 242920220 is about 15585.8981133588. The cubic root of 242920220 is about 623.9568476350.

Adding to 242920220 its reverse (22029242), we get a palindrome (264949462).

The spelling of 242920220 in words is "two hundred forty-two million, nine hundred twenty thousand, two hundred twenty".