1340435056 has 20 divisors (see below), whose sum is σ = 2611607400. Its totient is φ = 666471872.

The previous prime is 1340435053. The next prime is 1340435059. The reversal of 1340435056 is 6505340431.

It is an interprime number because it is at equal distance from previous prime (1340435053) and next prime (1340435059).

It is a super-2 number, since 2×1340435056² = 3593532278707446272, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1340435053) 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 3 ways as a sum of consecutive naturals, for example, 231151 + ... + 236878.

It is an arithmetic number, because the mean of its divisors is an integer number (130580370).

Almost surely, 2^1340435056 is an apocalyptic number.

1340435056 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1340435056 is a deficient number, since it is larger than the sum of its proper divisors (1271172344).

1340435056 is a wasteful number, since it uses less digits than its factorization.

1340435056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 468216 (or 468210 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 31.

The square root of 1340435056 is about 36611.9523653137. The cubic root of 1340435056 is about 1102.5930714325.

Adding to 1340435056 its reverse (6505340431), we get a palindrome (7845775487).

The spelling of 1340435056 in words is "one billion, three hundred forty million, four hundred thirty-five thousand, fifty-six".