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478141 = 1493209

478141 has 4 divisors (see below), whose sum is σ = 481500. Its totient is φ = 474784.

The previous prime is 478139. The next prime is 478157. The reversal of 478141 is 141874.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 141874 = 270937.

It can be written as a sum of positive squares in 2 ways, for example, as 152100 + 326041 = 390^2 + 571^2 .

It is a cyclic number.

It is not a de Polignac number, because 478141 - 21 = 478139 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (478111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1456 + ... + 1753.

It is an arithmetic number, because the mean of its divisors is an integer number (120375).

2478141 is an apocalyptic number.

It is an amenable number.

478141 is a deficient number, since it is larger than the sum of its proper divisors (3359).

478141 is a wasteful number, since it uses less digits than its factorization.

478141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3358.

The product of its digits is 896, while the sum is 25.

The square root of 478141 is about 691.4774038246. The cubic root of 478141 is about 78.1961423432.

The spelling of 478141 in words is "four hundred seventy-eight thousand, one hundred forty-one".

Divisors: 1 149 3209 478141