442702420 has 24 divisors (see below), whose sum is σ = 952351848. Its totient is φ = 172761600.

The previous prime is 442702397. The next prime is 442702427. The reversal of 442702420 is 24207244.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 18507204 + 424195216 = 4302^2 + 20596^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (442702427) 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 in 7 ways as a sum of consecutive naturals, for example, 269121 + ... + 270760.

It is an arithmetic number, because the mean of its divisors is an integer number (39681327).

Almost surely, 2^442702420 is an apocalyptic number.

It is an amenable number.

442702420 is an abundant number, since it is smaller than the sum of its proper divisors (509649428).

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

442702420 is a wasteful number, since it uses less digits than its factorization.

442702420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 539931 (or 539929 counting only the distinct ones).

The product of its (nonzero) digits is 3584, while the sum is 25.

The square root of 442702420 is about 21040.4947660458. The cubic root of 442702420 is about 762.1444627513.

Adding to 442702420 its reverse (24207244), we get a palindrome (466909664).

The spelling of 442702420 in words is "four hundred forty-two million, seven hundred two thousand, four hundred twenty".