1340330402 has 12 divisors (see below), whose sum is σ = 2066306130. Its totient is φ = 652051296.

The previous prime is 1340330399. The next prime is 1340330413. The reversal of 1340330402 is 2040330431.

It can be written as a sum of positive squares in 3 ways, for example, as 1278849121 + 61481281 = 35761^2 + 7841^2 .

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 242027 + ... + 247502.

Almost surely, 2^1340330402 is an apocalyptic number.

1340330402 is a deficient number, since it is larger than the sum of its proper divisors (725975728).

1340330402 is an equidigital number, since it uses as much as digits as its factorization.

1340330402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 489605 (or 489568 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 20.

The square root of 1340330402 is about 36610.5231047031. The cubic root of 1340330402 is about 1102.5643758290.

Adding to 1340330402 its reverse (2040330431), we get a palindrome (3380660833).

The spelling of 1340330402 in words is "one billion, three hundred forty million, three hundred thirty thousand, four hundred two".