442466 has 4 divisors (see below), whose sum is σ = 663702. Its totient is φ = 221232.

The previous prime is 442457. The next prime is 442469. The reversal of 442466 is 664244.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 265225 + 177241 = 515^2 + 421^2 .

It is a super-2 number, since 2×442466² = 391552322312, which contains 22 as substring.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 442466.

It is not an unprimeable number, because it can be changed into a prime (442469) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110615 + ... + 110618.

2⁴⁴²⁴⁶⁶ is an apocalyptic number.

442466 is a deficient number, since it is larger than the sum of its proper divisors (221236).

442466 is a wasteful number, since it uses less digits than its factorization.

442466 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 221235.

The product of its digits is 4608, while the sum is 26.

The square root of 442466 is about 665.1811783266. The cubic root of 442466 is about 76.2008767176.

The spelling of 442466 in words is "four hundred forty-two thousand, four hundred sixty-six".