442830420 has 72 divisors (see below), whose sum is σ = 1345354920. Its totient is φ = 117903360.

The previous prime is 442830419. The next prime is 442830457. The reversal of 442830420 is 24038244.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 253382724 + 189447696 = 15918^2 + 13764^2 .

It is a congruent number.

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 in 23 ways as a sum of consecutive naturals, for example, 144100 + ... + 147140.

It is an arithmetic number, because the mean of its divisors is an integer number (18685485).

Almost surely, 2^442830420 is an apocalyptic number.

It is an amenable number.

442830420 is an abundant number, since it is smaller than the sum of its proper divisors (902524500).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

442830420 is a wasteful number, since it uses less digits than its factorization.

442830420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3865 (or 3860 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 27.

The square root of 442830420 is about 21043.5362997762. The cubic root of 442830420 is about 762.2179094477.

Adding to 442830420 its reverse (24038244), we get a palindrome (466868664).

The spelling of 442830420 in words is "four hundred forty-two million, eight hundred thirty thousand, four hundred twenty".