1045040403 has 16 divisors (see below), whose sum is σ = 1537142400. Its totient is φ = 626239680.

The previous prime is 1045040389. The next prime is 1045040417. The reversal of 1045040403 is 3040405401.

It is an interprime number because it is at equal distance from previous prime (1045040389) and next prime (1045040417).

It is not a de Polignac number, because 1045040403 - 2¹⁶ = 1044974867 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1045040403.

It is not an unprimeable number, because it can be changed into a prime (1045047403) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 174973 + ... + 180846.

It is an arithmetic number, because the mean of its divisors is an integer number (96071400).

Almost surely, 2^1045040403 is an apocalyptic number.

1045040403 is a deficient number, since it is larger than the sum of its proper divisors (492101997).

1045040403 is a wasteful number, since it uses less digits than its factorization.

1045040403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 355922.

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 1045040403 is about 32327.0846659577. The cubic root of 1045040403 is about 1014.7935396679.

Adding to 1045040403 its reverse (3040405401), we get a palindrome (4085445804).

The spelling of 1045040403 in words is "one billion, forty-five million, forty thousand, four hundred three".