1040540503 has 4 divisors (see below), whose sum is σ = 1076421240. Its totient is φ = 1004659768.

The previous prime is 1040540489. The next prime is 1040540509. The reversal of 1040540503 is 3050450401.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3050450401 = 43 ⋅70940707.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1040540503 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1040540509) 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, 17940325 + ... + 17940382.

It is an arithmetic number, because the mean of its divisors is an integer number (269105310).

Almost surely, 2^1040540503 is an apocalyptic number.

1040540503 is a deficient number, since it is larger than the sum of its proper divisors (35880737).

1040540503 is an equidigital number, since it uses as much as digits as its factorization.

1040540503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35880736.

The product of its (nonzero) digits is 1200, while the sum is 22.

The square root of 1040540503 is about 32257.4100479254. The cubic root of 1040540503 is about 1013.3348912742.

Adding to 1040540503 its reverse (3050450401), we get a palindrome (4090990904).

The spelling of 1040540503 in words is "one billion, forty million, five hundred forty thousand, five hundred three".