1340332240 has 60 divisors (see below), whose sum is σ = 3374459244. Its totient is φ = 494886912.

The previous prime is 1340332193. The next prime is 1340332247. The reversal of 1340332240 is 422330431.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 626801296 + 713530944 = 25036^2 + 26712^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1340332247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 36049 + ... + 63088.

Almost surely, 2^1340332240 is an apocalyptic number.

1340332240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1340332240 is an abundant number, since it is smaller than the sum of its proper divisors (2034127004).

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

1340332240 is a wasteful number, since it uses less digits than its factorization.

1340332240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99176 (or 99157 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 22.

The square root of 1340332240 is about 36610.5482067669. The cubic root of 1340332240 is about 1102.5648798123.

Adding to 1340332240 its reverse (422330431), we get a palindrome (1762662671).

The spelling of 1340332240 in words is "one billion, three hundred forty million, three hundred thirty-two thousand, two hundred forty".