1340404202 has 8 divisors (see below), whose sum is σ = 2128877316. Its totient is φ = 630778432.

The previous prime is 1340404181. The next prime is 1340404207. The reversal of 1340404202 is 2024040431.

It can be written as a sum of positive squares in 2 ways, for example, as 1293768961 + 46635241 = 35969^2 + 6829^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (1340404207) 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 3 ways as a sum of consecutive naturals, for example, 19711793 + ... + 19711860.

Almost surely, 2^1340404202 is an apocalyptic number.

1340404202 is a deficient number, since it is larger than the sum of its proper divisors (788473114).

1340404202 is a wasteful number, since it uses less digits than its factorization.

1340404202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39423672.

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 1340404202 is about 36611.5309977608. The cubic root of 1340404202 is about 1102.5846115752.

Adding to 1340404202 its reverse (2024040431), we get a palindrome (3364444633).

The spelling of 1340404202 in words is "one billion, three hundred forty million, four hundred four thousand, two hundred two".