222405242 has 4 divisors (see below), whose sum is σ = 333607866. Its totient is φ = 111202620.

The previous prime is 222405233. The next prime is 222405283. The reversal of 222405242 is 242504222.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 173949721 + 48455521 = 13189^2 + 6961^2 .

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 55601309 + ... + 55601312.

Almost surely, 2^222405242 is an apocalyptic number.

222405242 is a deficient number, since it is larger than the sum of its proper divisors (111202624).

222405242 is a wasteful number, since it uses less digits than its factorization.

222405242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111202623.

The product of its (nonzero) digits is 2560, while the sum is 23.

The square root of 222405242 is about 14913.2572565486. The cubic root of 222405242 is about 605.8731031518.

Adding to 222405242 its reverse (242504222), we get a palindrome (464909464).

The spelling of 222405242 in words is "two hundred twenty-two million, four hundred five thousand, two hundred forty-two".