1040340040 has 32 divisors (see below), whose sum is σ = 2343773880. Its totient is φ = 415601152.

The previous prime is 1040340017. The next prime is 1040340047. The reversal of 1040340040 is 400430401.

It can be written as a sum of positive squares in 4 ways, for example, as 903964356 + 136375684 = 30066^2 + 11678^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1040339996 and 1040340023.

It is not an unprimeable number, because it can be changed into a prime (1040340047) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15564 + ... + 48196.

Almost surely, 2^1040340040 is an apocalyptic number.

1040340040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1040340040 is an abundant number, since it is smaller than the sum of its proper divisors (1303433840).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1040340040 is a wasteful number, since it uses less digits than its factorization.

1040340040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33441 (or 33437 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 1040340040 is about 32254.3026587152. The cubic root of 1040340040 is about 1013.2698131736.

Adding to 1040340040 its reverse (400430401), we get a palindrome (1440770441).

The spelling of 1040340040 in words is "one billion, forty million, three hundred forty thousand, forty".