442366 has 12 divisors (see below), whose sum is σ = 689832. Its totient is φ = 212744.

The previous prime is 442363. The next prime is 442367. The reversal of 442366 is 663244.

It is a self number, because there is not a number n which added to its sum of digits gives 442366.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (442363) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1551 + ... + 1813.

It is an arithmetic number, because the mean of its divisors is an integer number (57486).

442366 is a Friedman number, since it can be written as (6^3*4^6-4)/2, using all its digits and the basic arithmetic operations.

2⁴⁴²³⁶⁶ is an apocalyptic number.

442366 is a deficient number, since it is larger than the sum of its proper divisors (247466).

442366 is a wasteful number, since it uses less digits than its factorization.

442366 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 323 (or 294 counting only the distinct ones).

The product of its digits is 3456, while the sum is 25.

The square root of 442366 is about 665.1060065884. The cubic root of 442366 is about 76.1951356649.

It can be divided in two parts, 4423 and 66, that added together give a square (4489 = 67²).

The spelling of 442366 in words is "four hundred forty-two thousand, three hundred sixty-six".