1040403 has 32 divisors (see below), whose sum is σ = 1770496. Its totient is φ = 528768.

The previous prime is 1040387. The next prime is 1040407. The reversal of 1040403 is 3040401.

1040403 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

1040403 is a nontrivial binomial coefficient, being equal to C(1443, 2).

It is not a de Polignac number, because 1040403 - 2⁴ = 1040387 is a prime.

It is a D-number.

It is not an unprimeable number, because it can be changed into a prime (1040407) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10050 + ... + 10152.

It is an arithmetic number, because the mean of its divisors is an integer number (55328).

2^1040403 is an apocalyptic number.

1040403 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1040403 is the 1442-nd triangular number.

1040403 is a deficient number, since it is larger than the sum of its proper divisors (730093).

1040403 is a wasteful number, since it uses less digits than its factorization.

With its predecessor (1040402) it forms a Ruth-Aaron pair, since the sum of their distinct prime factors is the same (163).

1040403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163.

The product of its (nonzero) digits is 48, while the sum is 12.

The square root of 1040403 is about 1020.0014705872. The cubic root of 1040403 is about 101.3290253343.

Adding to 1040403 its reverse (3040401), we get a palindrome (4080804).

The spelling of 1040403 in words is "one million, forty thousand, four hundred three".