1571316242 has 8 divisors (see below), whose sum is σ = 2357281596. Its totient is φ = 785555712.

The previous prime is 1571316223. The next prime is 1571316319. The reversal of 1571316242 is 2426131751.

It can be written as a sum of positive squares in 2 ways, for example, as 1472333641 + 98982601 = 38371^2 + 9949^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 1571316199 and 1571316208.

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 in 3 ways as a sum of consecutive naturals, for example, 30323 + ... + 63734.

Almost surely, 2^1571316242 is an apocalyptic number.

1571316242 is a deficient number, since it is larger than the sum of its proper divisors (785965354).

1571316242 is an equidigital number, since it uses as much as digits as its factorization.

1571316242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102412.

The product of its digits is 10080, while the sum is 32.

The square root of 1571316242 is about 39639.8315082191. The cubic root of 1571316242 is about 1162.5755895196.

Adding to 1571316242 its reverse (2426131751), we get a palindrome (3997447993).

The spelling of 1571316242 in words is "one billion, five hundred seventy-one million, three hundred sixteen thousand, two hundred forty-two".