478442 has 16 divisors (see below), whose sum is σ = 759240. Its totient is φ = 225792.

The previous prime is 478441. The next prime is 478451. The reversal of 478442 is 244874.

It can be written as a sum of positive squares in 4 ways, for example, as 292681 + 185761 = 541^2 + 431^2 .

It is a Harshad number since it is a multiple of its sum of digits (29).

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 478442.

It is not an unprimeable number, because it can be changed into a prime (478441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4178 + ... + 4290.

2⁴⁷⁸⁴⁴² is an apocalyptic number.

478442 is a deficient number, since it is larger than the sum of its proper divisors (280798).

478442 is a wasteful number, since it uses less digits than its factorization.

478442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 217.

The product of its digits is 7168, while the sum is 29.

The square root of 478442 is about 691.6950194992. The cubic root of 478442 is about 78.2125476167.

The spelling of 478442 in words is "four hundred seventy-eight thousand, four hundred forty-two".