442021108 has 12 divisors (see below), whose sum is σ = 773685892. Its totient is φ = 220968000.

The previous prime is 442021093. The next prime is 442021109. The reversal of 442021108 is 801120244.

It can be written as a sum of positive squares in 2 ways, for example, as 56370064 + 385651044 = 7508^2 + 19638^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (442021109) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29866 + ... + 42142.

Almost surely, 2^442021108 is an apocalyptic number.

It is an amenable number.

442021108 is a deficient number, since it is larger than the sum of its proper divisors (331664784).

442021108 is a wasteful number, since it uses less digits than its factorization.

442021108 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21282 (or 21280 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 22.

The square root of 442021108 is about 21024.2980382223. The cubic root of 442021108 is about 761.7532859326.

The spelling of 442021108 in words is "four hundred forty-two million, twenty-one thousand, one hundred eight".