442490 has 8 divisors (see below), whose sum is σ = 796500. Its totient is φ = 176992.

The previous prime is 442489. The next prime is 442499. The reversal of 442490 is 94244.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 373321 + 69169 = 611^2 + 263^2 .

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

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (442499) 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, 22115 + ... + 22134.

2⁴⁴²⁴⁹⁰ is an apocalyptic number.

442490 is a deficient number, since it is larger than the sum of its proper divisors (354010).

442490 is a wasteful number, since it uses less digits than its factorization.

442490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44256.

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 442490 is about 665.1992182798. The cubic root of 442490 is about 76.2022544415.

The spelling of 442490 in words is "four hundred forty-two thousand, four hundred ninety".