442543768 has 8 divisors (see below), whose sum is σ = 829769580. Its totient is φ = 221271880.

The previous prime is 442543757. The next prime is 442543769. The reversal of 442543768 is 867345244.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (442543769) by changing a digit.

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, 27658978 + ... + 27658993.

Almost surely, 2^442543768 is an apocalyptic number.

It is an amenable number.

442543768 is a deficient number, since it is larger than the sum of its proper divisors (387225812).

442543768 is a wasteful number, since it uses less digits than its factorization.

442543768 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55317977 (or 55317973 counting only the distinct ones).

The product of its digits is 645120, while the sum is 43.

The square root of 442543768 is about 21036.7242697146. The cubic root of 442543768 is about 762.0534082152.

The spelling of 442543768 in words is "four hundred forty-two million, five hundred forty-three thousand, seven hundred sixty-eight".