315125242 has 8 divisors (see below), whose sum is σ = 483680736. Its totient is φ = 153898332.

The previous prime is 315125201. The next prime is 315125269. The reversal of 315125242 is 242521513.

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, 1832038 + ... + 1832209.

It is an arithmetic number, because the mean of its divisors is an integer number (60460092).

Almost surely, 2^315125242 is an apocalyptic number.

315125242 is a deficient number, since it is larger than the sum of its proper divisors (168555494).

315125242 is a wasteful number, since it uses less digits than its factorization.

315125242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3664292.

The product of its digits is 2400, while the sum is 25.

The square root of 315125242 is about 17751.7672923008. The cubic root of 315125242 is about 680.4993751077.

Adding to 315125242 its reverse (242521513), we get a palindrome (557646755).

The spelling of 315125242 in words is "three hundred fifteen million, one hundred twenty-five thousand, two hundred forty-two".