222402442 has 4 divisors (see below), whose sum is σ = 333603666. Its totient is φ = 111201220.

The previous prime is 222402437. The next prime is 222402451. The reversal of 222402442 is 244204222.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 244204222 = 2 ⋅122102111.

It can be written as a sum of positive squares in only one way, i.e., 199063881 + 23338561 = 14109^2 + 4831^2 .

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, 55600609 + ... + 55600612.

Almost surely, 2^222402442 is an apocalyptic number.

222402442 is a deficient number, since it is larger than the sum of its proper divisors (111201224).

222402442 is a wasteful number, since it uses less digits than its factorization.

222402442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111201223.

The product of its (nonzero) digits is 2048, while the sum is 22.

The square root of 222402442 is about 14913.1633800478. The cubic root of 222402442 is about 605.8705605681.

Adding to 222402442 its reverse (244204222), we get a palindrome (466606664).

The spelling of 222402442 in words is "two hundred twenty-two million, four hundred two thousand, four hundred forty-two".