1317642041 has 4 divisors (see below), whose sum is σ = 1321375092. Its totient is φ = 1313908992.

The previous prime is 1317642019. The next prime is 1317642049. The reversal of 1317642041 is 1402467131.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 839782441 + 477859600 = 28979^2 + 21860^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1317642041 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1317641995 and 1317642013.

It is not an unprimeable number, because it can be changed into a prime (1317642049) 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 in 3 ways as a sum of consecutive naturals, for example, 1865996 + ... + 1866701.

It is an arithmetic number, because the mean of its divisors is an integer number (330343773).

Almost surely, 2^1317642041 is an apocalyptic number.

It is an amenable number.

1317642041 is a deficient number, since it is larger than the sum of its proper divisors (3733051).

1317642041 is an equidigital number, since it uses as much as digits as its factorization.

1317642041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3733050.

The product of its (nonzero) digits is 4032, while the sum is 29.

The square root of 1317642041 is about 36299.3394017026. The cubic root of 1317642041 is about 1096.3077419272.

The spelling of 1317642041 in words is "one billion, three hundred seventeen million, six hundred forty-two thousand, forty-one".