1317385042 has 8 divisors (see below), whose sum is σ = 1976339196. Its totient is φ = 658605312.

The previous prime is 1317385039. The next prime is 1317385067. The reversal of 1317385042 is 2405837131.

It can be written as a sum of positive squares in 2 ways, for example, as 1314860121 + 2524921 = 36261^2 + 1589^2 .

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 = 1317384989 and 1317385007.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22723 + ... + 56134.

Almost surely, 2^1317385042 is an apocalyptic number.

1317385042 is a deficient number, since it is larger than the sum of its proper divisors (658954154).

1317385042 is an equidigital number, since it uses as much as digits as its factorization.

1317385042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87212.

The product of its (nonzero) digits is 20160, while the sum is 34.

The square root of 1317385042 is about 36295.7992335201. The cubic root of 1317385042 is about 1096.2364609813.

The spelling of 1317385042 in words is "one billion, three hundred seventeen million, three hundred eighty-five thousand, forty-two".