442730 has 8 divisors (see below), whose sum is σ = 796932. Its totient is φ = 177088.

The previous prime is 442721. The next prime is 442733. The reversal of 442730 is 37244.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 395641 + 47089 = 629^2 + 217^2 .

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

It is not an unprimeable number, because it can be changed into a prime (442733) 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, 22127 + ... + 22146.

2⁴⁴²⁷³⁰ is an apocalyptic number.

442730 is a deficient number, since it is larger than the sum of its proper divisors (354202).

442730 is a wasteful number, since it uses less digits than its factorization.

442730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44280.

The product of its (nonzero) digits is 672, while the sum is 20.

The square root of 442730 is about 665.3795909103. The cubic root of 442730 is about 76.2160289416.

Adding to 442730 its reverse (37244), we get a palindrome (479974).

The spelling of 442730 in words is "four hundred forty-two thousand, seven hundred thirty".