442135222 has 8 divisors (see below), whose sum is σ = 675716256. Its totient is φ = 216896472.

The previous prime is 442135219. The next prime is 442135223. The reversal of 442135222 is 222531244.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (442135223) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2085438 + ... + 2085649.

It is an arithmetic number, because the mean of its divisors is an integer number (84464532).

Almost surely, 2^442135222 is an apocalyptic number.

442135222 is a deficient number, since it is larger than the sum of its proper divisors (233581034).

442135222 is a wasteful number, since it uses less digits than its factorization.

442135222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4171142.

The product of its digits is 3840, while the sum is 25.

The square root of 442135222 is about 21027.0117230195. The cubic root of 442135222 is about 761.8188327534.

Adding to 442135222 its reverse (222531244), we get a palindrome (664666466).

The spelling of 442135222 in words is "four hundred forty-two million, one hundred thirty-five thousand, two hundred twenty-two".