315142858 has 4 divisors (see below), whose sum is σ = 472714290. Its totient is φ = 157571428.

The previous prime is 315142847. The next prime is 315142907. The reversal of 315142858 is 858241513.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 858241513 = 61 ⋅14069533.

It can be written as a sum of positive squares in only one way, i.e., 285035689 + 30107169 = 16883^2 + 5487^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78785713 + ... + 78785716.

Almost surely, 2^315142858 is an apocalyptic number.

315142858 is a deficient number, since it is larger than the sum of its proper divisors (157571432).

315142858 is a wasteful number, since it uses less digits than its factorization.

315142858 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157571431.

The product of its digits is 38400, while the sum is 37.

The square root of 315142858 is about 17752.2634613167. The cubic root of 315142858 is about 680.5120552023.

The spelling of 315142858 in words is "three hundred fifteen million, one hundred forty-two thousand, eight hundred fifty-eight".