1375139 has 4 divisors (see below), whose sum is σ = 1390680. Its totient is φ = 1359600.

The previous prime is 1375133. The next prime is 1375141. The reversal of 1375139 is 9315731.

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

It is a cyclic number.

It is not a de Polignac number, because 1375139 - 2²⁰ = 326563 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1375133) by changing a digit.

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, 7637 + ... + 7814.

It is an arithmetic number, because the mean of its divisors is an integer number (347670).

2^1375139 is an apocalyptic number.

1375139 is a deficient number, since it is larger than the sum of its proper divisors (15541).

1375139 is an equidigital number, since it uses as much as digits as its factorization.

1375139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15540.

The product of its digits is 2835, while the sum is 29.

The square root of 1375139 is about 1172.6632082572. The cubic root of 1375139 is about 111.2027514717.

The spelling of 1375139 in words is "one million, three hundred seventy-five thousand, one hundred thirty-nine".