1315742443 has 2 divisors, whose sum is σ = 1315742444. Its totient is φ = 1315742442.

The previous prime is 1315742431. The next prime is 1315742473. The reversal of 1315742443 is 3442475131.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1315742443 is a prime.

It is a super-3 number, since 3×1315742443³ (a number of 28 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1315742399 and 1315742408.

It is not a weakly prime, because it can be changed into another prime (1315742473) 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 as a sum of consecutive naturals, namely, 657871221 + 657871222.

It is an arithmetic number, because the mean of its divisors is an integer number (657871222).

Almost surely, 2^1315742443 is an apocalyptic number.

1315742443 is a deficient number, since it is larger than the sum of its proper divisors (1).

1315742443 is an equidigital number, since it uses as much as digits as its factorization.

1315742443 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 40320, while the sum is 34.

The square root of 1315742443 is about 36273.1642264636. The cubic root of 1315742443 is about 1095.7806524982.

The spelling of 1315742443 in words is "one billion, three hundred fifteen million, seven hundred forty-two thousand, four hundred forty-three".