424478 has 4 divisors (see below), whose sum is σ = 636720. Its totient is φ = 212238.

The previous prime is 424471. The next prime is 424481. The reversal of 424478 is 874424.

424478 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.

It is a self number, because there is not a number n which added to its sum of digits gives 424478.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (424471) 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 as a sum of consecutive naturals, namely, 106118 + ... + 106121.

It is an arithmetic number, because the mean of its divisors is an integer number (159180).

2⁴²⁴⁴⁷⁸ is an apocalyptic number.

424478 is a deficient number, since it is larger than the sum of its proper divisors (212242).

424478 is a wasteful number, since it uses less digits than its factorization.

424478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 212241.

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

The square root of 424478 is about 651.5197617878. The cubic root of 424478 is about 75.1539356864.

The spelling of 424478 in words is "four hundred twenty-four thousand, four hundred seventy-eight".