1345403 has 4 divisors (see below), whose sum is σ = 1352568. Its totient is φ = 1338240.

The previous prime is 1345361. The next prime is 1345423. The reversal of 1345403 is 3045431.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3045431 = 17 ⋅179143.

It is a cyclic number.

It is not a de Polignac number, because 1345403 - 2²⁰ = 296827 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1345423) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3293 + ... + 3678.

It is an arithmetic number, because the mean of its divisors is an integer number (338142).

2^1345403 is an apocalyptic number.

1345403 is a deficient number, since it is larger than the sum of its proper divisors (7165).

1345403 is an equidigital number, since it uses as much as digits as its factorization.

1345403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7164.

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 1345403 is about 1159.9150830988. The cubic root of 1345403 is about 110.3953542031.

The spelling of 1345403 in words is "one million, three hundred forty-five thousand, four hundred three".