222420242 has 8 divisors (see below), whose sum is σ = 363960432. Its totient is φ = 101100100.

The previous prime is 222420241. The next prime is 222420259. The reversal of 222420242 is 242024222.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (222420241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5054984 + ... + 5055027.

It is an arithmetic number, because the mean of its divisors is an integer number (45495054).

Almost surely, 2^222420242 is an apocalyptic number.

222420242 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

222420242 is a deficient number, since it is larger than the sum of its proper divisors (141540190).

222420242 is a wasteful number, since it uses less digits than its factorization.

222420242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10110024.

The product of its (nonzero) digits is 1024, while the sum is 20.

The square root of 222420242 is about 14913.7601563120. The cubic root of 222420242 is about 605.8867237723.

Adding to 222420242 its reverse (242024222), we get a palindrome (464444464).

The spelling of 222420242 in words is "two hundred twenty-two million, four hundred twenty thousand, two hundred forty-two".