442223102 has 4 divisors (see below), whose sum is σ = 663334656. Its totient is φ = 221111550.

The previous prime is 442223069. The next prime is 442223179. The reversal of 442223102 is 201322244.

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

It is a super-2 number, since 2×442223102² = 391122543885004808, which contains 22 as substring.

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 as a sum of consecutive naturals, namely, 110555774 + ... + 110555777.

It is an arithmetic number, because the mean of its divisors is an integer number (165833664).

Almost surely, 2^442223102 is an apocalyptic number.

442223102 is a deficient number, since it is larger than the sum of its proper divisors (221111554).

442223102 is a wasteful number, since it uses less digits than its factorization.

442223102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 221111553.

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 442223102 is about 21029.1013122292. The cubic root of 442223102 is about 761.8693031379.

Adding to 442223102 its reverse (201322244), we get a palindrome (643545346).

The spelling of 442223102 in words is "four hundred forty-two million, two hundred twenty-three thousand, one hundred two".