442541522 has 4 divisors (see below), whose sum is σ = 663812286. Its totient is φ = 221270760.

The previous prime is 442541503. The next prime is 442541531. The reversal of 442541522 is 225145244.

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., 243703321 + 198838201 = 15611^2 + 14101^2 .

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, 110635379 + ... + 110635382.

Almost surely, 2^442541522 is an apocalyptic number.

442541522 is a deficient number, since it is larger than the sum of its proper divisors (221270764).

442541522 is a wasteful number, since it uses less digits than its factorization.

442541522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 221270763.

The product of its digits is 12800, while the sum is 29.

The square root of 442541522 is about 21036.6708868110. The cubic root of 442541522 is about 762.0521190208.

Adding to 442541522 its reverse (225145244), we get a palindrome (667686766).

The spelling of 442541522 in words is "four hundred forty-two million, five hundred forty-one thousand, five hundred twenty-two".