315749742 has 48 divisors (see below), whose sum is σ = 793301376. Its totient is φ = 82011600.

The previous prime is 315749729. The next prime is 315749801. The reversal of 315749742 is 247947513.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a junction number, because it is equal to n+sod(n) for n = 315749694 and 315749703.

It is a congruent number.

It is an unprimeable number.

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 in 23 ways as a sum of consecutive naturals, for example, 25984 + ... + 36147.

It is an arithmetic number, because the mean of its divisors is an integer number (16527112).

Almost surely, 2^315749742 is an apocalyptic number.

315749742 is an abundant number, since it is smaller than the sum of its proper divisors (477551634).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

315749742 is a wasteful number, since it uses less digits than its factorization.

315749742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62165 (or 62154 counting only the distinct ones).

The product of its digits is 211680, while the sum is 42.

The square root of 315749742 is about 17769.3483842261. The cubic root of 315749742 is about 680.9486054266.

It can be divided in two parts, 315 and 749742, that added together give a palindrome (750057).

The spelling of 315749742 in words is "three hundred fifteen million, seven hundred forty-nine thousand, seven hundred forty-two".