442423534 has 16 divisors (see below), whose sum is σ = 762039936. Its totient is φ = 188710200.

The previous prime is 442423529. The next prime is 442423543. The reversal of 442423534 is 435324244.

It is a junction number, because it is equal to n+sod(n) for n = 442423496 and 442423505.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 71932 + ... + 77839.

It is an arithmetic number, because the mean of its divisors is an integer number (47627496).

Almost surely, 2^442423534 is an apocalyptic number.

442423534 is a deficient number, since it is larger than the sum of its proper divisors (319616402).

442423534 is a wasteful number, since it uses less digits than its factorization.

442423534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149991.

The product of its digits is 46080, while the sum is 31.

The square root of 442423534 is about 21033.8663588034. The cubic root of 442423534 is about 761.9843882786.

Adding to 442423534 its reverse (435324244), we get a palindrome (877747778).

The spelling of 442423534 in words is "four hundred forty-two million, four hundred twenty-three thousand, five hundred thirty-four".