242400220 has 24 divisors (see below), whose sum is σ = 531173664. Its totient is φ = 92744256.

The previous prime is 242400199. The next prime is 242400239. The reversal of 242400220 is 22004242.

It is a junction number, because it is equal to n+sod(n) for n = 242400194 and 242400203.

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, 263019 + ... + 263938.

It is an arithmetic number, because the mean of its divisors is an integer number (22132236).

Almost surely, 2^242400220 is an apocalyptic number.

242400220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

242400220 is an abundant number, since it is smaller than the sum of its proper divisors (288773444).

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

242400220 is a wasteful number, since it uses less digits than its factorization.

242400220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 526989 (or 526987 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 16.

The square root of 242400220 is about 15569.2074300524. The cubic root of 242400220 is about 623.5113113049.

Adding to 242400220 its reverse (22004242), we get a palindrome (264404462).

The spelling of 242400220 in words is "two hundred forty-two million, four hundred thousand, two hundred twenty".