424978 has 8 divisors (see below), whose sum is σ = 643968. Its totient is φ = 210324.

The previous prime is 424967. The next prime is 424997. The reversal of 424978 is 879424.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 826 + ... + 1237.

It is an arithmetic number, because the mean of its divisors is an integer number (80496).

2⁴²⁴⁹⁷⁸ is an apocalyptic number.

424978 is a deficient number, since it is larger than the sum of its proper divisors (218990).

424978 is a wasteful number, since it uses less digits than its factorization.

424978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2168.

The product of its digits is 16128, while the sum is 34.

The square root of 424978 is about 651.9033670721. The cubic root of 424978 is about 75.1834324827.

The spelling of 424978 in words is "four hundred twenty-four thousand, nine hundred seventy-eight".