478342 has 4 divisors (see below), whose sum is σ = 717516. Its totient is φ = 239170.

The previous prime is 478339. The next prime is 478343. The reversal of 478342 is 243874.

478342 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 243874 = 2 ⋅121937.

It is a super-2 number, since 2×478342² = 457622137928, which contains 22 as substring.

It is an Ulam number.

It is a d-powerful number, because it can be written as 4⁸ + 7⁶ + 3⁵ + 8⁵ + 4⁹ + 2 .

It is a self number, because there is not a number n which added to its sum of digits gives 478342.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (478343) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 119584 + ... + 119587.

It is an arithmetic number, because the mean of its divisors is an integer number (179379).

2⁴⁷⁸³⁴² is an apocalyptic number.

478342 is a deficient number, since it is larger than the sum of its proper divisors (239174).

478342 is a wasteful number, since it uses less digits than its factorization.

478342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 239173.

The product of its digits is 5376, while the sum is 28.

The square root of 478342 is about 691.6227295282. The cubic root of 478342 is about 78.2070981231.

It can be divided in two parts, 478 and 342, that added together give a triangular number (820 = T₄₀).

The spelling of 478342 in words is "four hundred seventy-eight thousand, three hundred forty-two".