442171682 has 8 divisors (see below), whose sum is σ = 681183516. Its totient is φ = 215110512.

The previous prime is 442171663. The next prime is 442171699. The reversal of 442171682 is 286171244.

It can be written as a sum of positive squares in 2 ways, for example, as 441798361 + 373321 = 21019^2 + 611^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2987573 + ... + 2987720.

Almost surely, 2^442171682 is an apocalyptic number.

442171682 is a deficient number, since it is larger than the sum of its proper divisors (239011834).

442171682 is a wasteful number, since it uses less digits than its factorization.

442171682 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5975332.

The product of its digits is 21504, while the sum is 35.

The square root of 442171682 is about 21027.8786852122. The cubic root of 442171682 is about 761.8397729167.

The spelling of 442171682 in words is "four hundred forty-two million, one hundred seventy-one thousand, six hundred eighty-two".