315249742 has 8 divisors (see below), whose sum is σ = 473663232. Its totient is φ = 157362000.

The previous prime is 315249733. The next prime is 315249743. The reversal of 315249742 is 247942513.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (315249743) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 129934 + ... + 132337.

It is an arithmetic number, because the mean of its divisors is an integer number (59207904).

Almost surely, 2^315249742 is an apocalyptic number.

315249742 is a deficient number, since it is larger than the sum of its proper divisors (158413490).

315249742 is a wasteful number, since it uses less digits than its factorization.

315249742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 262874.

The product of its digits is 60480, while the sum is 37.

The square root of 315249742 is about 17755.2736391192. The cubic root of 315249742 is about 680.5889807692.

The spelling of 315249742 in words is "three hundred fifteen million, two hundred forty-nine thousand, seven hundred forty-two".