1403243 has 4 divisors (see below), whose sum is σ = 1412688. Its totient is φ = 1393800.

The previous prime is 1403239. The next prime is 1403249. The reversal of 1403243 is 3423041.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3423041 = 353 ⋅9697.

It is a cyclic number.

It is not a de Polignac number, because 1403243 - 2² = 1403239 is a prime.

It is a Duffinian number.

It is a plaindrome in base 9.

It is not an unprimeable number, because it can be changed into a prime (1403249) 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, 4496 + ... + 4797.

It is an arithmetic number, because the mean of its divisors is an integer number (353172).

2^1403243 is an apocalyptic number.

1403243 is a deficient number, since it is larger than the sum of its proper divisors (9445).

1403243 is an equidigital number, since it uses as much as digits as its factorization.

1403243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9444.

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 1403243 is about 1184.5855815432. The cubic root of 1403243 is about 111.9552063647.

Adding to 1403243 its reverse (3423041), we get a palindrome (4826284).

The spelling of 1403243 in words is "one million, four hundred three thousand, two hundred forty-three".