315020542 has 4 divisors (see below), whose sum is σ = 472530816. Its totient is φ = 157510270.

The previous prime is 315020521. The next prime is 315020549. The reversal of 315020542 is 245020513.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 245020513 = 2039 ⋅120167.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (315020549) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78755134 + ... + 78755137.

It is an arithmetic number, because the mean of its divisors is an integer number (118132704).

Almost surely, 2^315020542 is an apocalyptic number.

315020542 is a deficient number, since it is larger than the sum of its proper divisors (157510274).

315020542 is a wasteful number, since it uses less digits than its factorization.

315020542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157510273.

The product of its (nonzero) digits is 1200, while the sum is 22.

The square root of 315020542 is about 17748.8180451544. The cubic root of 315020542 is about 680.4240017141.

The spelling of 315020542 in words is "three hundred fifteen million, twenty thousand, five hundred forty-two".