1040040505 has 16 divisors (see below), whose sum is σ = 1429749504. Its totient is φ = 711466560.

The previous prime is 1040040503. The next prime is 1040040509. The reversal of 1040040505 is 5050400401.

It is not a de Polignac number, because 1040040505 - 2¹ = 1040040503 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1040040503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20557 + ... + 50026.

It is an arithmetic number, because the mean of its divisors is an integer number (89359344).

Almost surely, 2^1040040505 is an apocalyptic number.

It is an amenable number.

1040040505 is a deficient number, since it is larger than the sum of its proper divisors (389708999).

1040040505 is an equidigital number, since it uses as much as digits as its factorization.

1040040505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71016.

The product of its (nonzero) digits is 400, while the sum is 19.

The square root of 1040040505 is about 32249.6589904452. The cubic root of 1040040505 is about 1013.1725568615.

Adding to 1040040505 its reverse (5050400401), we get a palindrome (6090440906).

It can be divided in two parts, 10400 and 40505, that added together give a palindrome (50905).

The spelling of 1040040505 in words is "one billion, forty million, forty thousand, five hundred five".