1315139 has 4 divisors (see below), whose sum is σ = 1503024. Its totient is φ = 1127256.

The previous prime is 1315087. The next prime is 1315151. The reversal of 1315139 is 9315131.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9315131 = 7 ⋅1330733.

It is a cyclic number.

It is not a de Polignac number, because 1315139 - 2⁸ = 1314883 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1315159) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 93932 + ... + 93945.

It is an arithmetic number, because the mean of its divisors is an integer number (375756).

2^1315139 is an apocalyptic number.

1315139 is a deficient number, since it is larger than the sum of its proper divisors (187885).

1315139 is an equidigital number, since it uses as much as digits as its factorization.

1315139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 187884.

The product of its digits is 405, while the sum is 23.

The square root of 1315139 is about 1146.7950993966. The cubic root of 1315139 is about 109.5613106466.

The spelling of 1315139 in words is "one million, three hundred fifteen thousand, one hundred thirty-nine".