478255123 has 4 divisors (see below), whose sum is σ = 499048848. Its totient is φ = 457461400.

The previous prime is 478255103. The next prime is 478255139. The reversal of 478255123 is 321552874.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 478255123 - 2⁵ = 478255091 is a prime.

It is not an unprimeable number, because it can be changed into a prime (478255103) 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 3 ways as a sum of consecutive naturals, for example, 10396828 + ... + 10396873.

It is an arithmetic number, because the mean of its divisors is an integer number (124762212).

Almost surely, 2^478255123 is an apocalyptic number.

478255123 is a deficient number, since it is larger than the sum of its proper divisors (20793725).

478255123 is a wasteful number, since it uses less digits than its factorization.

478255123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20793724.

The product of its digits is 67200, while the sum is 37.

The square root of 478255123 is about 21869.0448579722. The cubic root of 478255123 is about 782.0236315009.

The spelling of 478255123 in words is "four hundred seventy-eight million, two hundred fifty-five thousand, one hundred twenty-three".