478331242 has 8 divisors (see below), whose sum is σ = 717611076. Its totient is φ = 239127552.

The previous prime is 478331239. The next prime is 478331309. The reversal of 478331242 is 242133874.

It can be written as a sum of positive squares in 2 ways, for example, as 449397601 + 28933641 = 21199^2 + 5379^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 478331198 and 478331207.

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, 808 + ... + 30940.

Almost surely, 2^478331242 is an apocalyptic number.

478331242 is a deficient number, since it is larger than the sum of its proper divisors (239279834).

478331242 is a wasteful number, since it uses less digits than its factorization.

478331242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38072.

The product of its digits is 32256, while the sum is 34.

The square root of 478331242 is about 21870.7851253676. The cubic root of 478331242 is about 782.0651182138.

The spelling of 478331242 in words is "four hundred seventy-eight million, three hundred thirty-one thousand, two hundred forty-two".