478242 has 18 divisors (see below), whose sum is σ = 1042587. Its totient is φ = 158436.

The previous prime is 478241. The next prime is 478243. The reversal of 478242 is 242874.

It is an interprime number because it is at equal distance from previous prime (478241) and next prime (478243).

It can be written as a sum of positive squares in only one way, i.e., 239121 + 239121 = 489^2 + 489^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=489.

It is not an unprimeable number, because it can be changed into a prime (478241) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 2853 + ... + 3015.

2⁴⁷⁸²⁴² is an apocalyptic number.

478242 is an abundant number, since it is smaller than the sum of its proper divisors (564345).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

478242 is a wasteful number, since it uses less digits than its factorization.

478242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 334 (or 168 counting only the distinct ones).

The product of its digits is 3584, while the sum is 27.

The square root of 478242 is about 691.5504320004. The cubic root of 478242 is about 78.2016478701.

The spelling of 478242 in words is "four hundred seventy-eight thousand, two hundred forty-two".