442105544 has 8 divisors (see below), whose sum is σ = 828947910. Its totient is φ = 221052768.

The previous prime is 442105541. The next prime is 442105549. The reversal of 442105544 is 445501244.

It can be written as a sum of positive squares in only one way, i.e., 430064644 + 12040900 = 20738^2 + 3470^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (442105541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27631589 + ... + 27631604.

Almost surely, 2^442105544 is an apocalyptic number.

It is an amenable number.

442105544 is a deficient number, since it is larger than the sum of its proper divisors (386842366).

442105544 is a wasteful number, since it uses less digits than its factorization.

442105544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55263199 (or 55263195 counting only the distinct ones).

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

The square root of 442105544 is about 21026.3059998660. The cubic root of 442105544 is about 761.8017868633.

Adding to 442105544 its reverse (445501244), we get a palindrome (887606788).

The spelling of 442105544 in words is "four hundred forty-two million, one hundred five thousand, five hundred forty-four".