1375403 has 4 divisors (see below), whose sum is σ = 1401408. Its totient is φ = 1349400.

The previous prime is 1375379. The next prime is 1375411. The reversal of 1375403 is 3045731.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3045731 = 13 ⋅234287.

It is a cyclic number.

It is not a de Polignac number, because 1375403 - 2¹⁰ = 1374379 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 (1375433) 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, 12923 + ... + 13028.

It is an arithmetic number, because the mean of its divisors is an integer number (350352).

2^1375403 is an apocalyptic number.

1375403 is a deficient number, since it is larger than the sum of its proper divisors (26005).

1375403 is an equidigital number, since it uses as much as digits as its factorization.

1375403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26004.

The product of its (nonzero) digits is 1260, while the sum is 23.

The square root of 1375403 is about 1172.7757671439. The cubic root of 1375403 is about 111.2098672731.

The spelling of 1375403 in words is "one million, three hundred seventy-five thousand, four hundred three".