442223234 has 4 divisors (see below), whose sum is σ = 663334854. Its totient is φ = 221111616.

The previous prime is 442223219. The next prime is 442223239. The reversal of 442223234 is 432322244.

It is a happy number.

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., 240157009 + 202066225 = 15497^2 + 14215^2 .

It is a super-2 number, since 2×442223234² = 391122777378837512, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (442223239) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110555807 + ... + 110555810.

Almost surely, 2^442223234 is an apocalyptic number.

442223234 is a deficient number, since it is larger than the sum of its proper divisors (221111620).

442223234 is a wasteful number, since it uses less digits than its factorization.

442223234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 221111619.

The product of its digits is 9216, while the sum is 26.

The square root of 442223234 is about 21029.1044507368. The cubic root of 442223234 is about 761.8693789418.

Adding to 442223234 its reverse (432322244), we get a palindrome (874545478).

The spelling of 442223234 in words is "four hundred forty-two million, two hundred twenty-three thousand, two hundred thirty-four".