242400222 has 64 divisors (see below), whose sum is σ = 562636800. Its totient is φ = 77267520.

The previous prime is 242400199. The next prime is 242400239. The reversal of 242400222 is 222004242.

242400222 is a `hidden beast` number, since 2 + 42 + 400 + 222 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 242400195 and 242400204.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 148173 + ... + 149799.

It is an arithmetic number, because the mean of its divisors is an integer number (8791200).

Almost surely, 2^242400222 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 242400222, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (281318400).

242400222 is an abundant number, since it is smaller than the sum of its proper divisors (320236578).

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

242400222 is a wasteful number, since it uses less digits than its factorization.

242400222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1758 (or 1752 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 18.

The square root of 242400222 is about 15569.2074942818. The cubic root of 242400222 is about 623.5113130197.

Adding to 242400222 its reverse (222004242), we get a palindrome (464404464).

The spelling of 242400222 in words is "two hundred forty-two million, four hundred thousand, two hundred twenty-two".