1340433688442 has 8 divisors (see below), whose sum is σ = 2010668030100. Its totient is φ = 670211011744.

The previous prime is 1340433688403. The next prime is 1340433688453. The reversal of 1340433688442 is 2448863340431.

It is a Cunningham number, because it is equal to 1157771²+1.

It can be written as a sum of positive squares in 2 ways, for example, as 1340433688441 + 1 = 1157771^2 + 1^2 .

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

It is a super-2 number, since 2×1340433688442² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

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, 2623067 + ... + 3092142.

Almost surely, 2^{1340433688442} is an apocalyptic number.

1340433688442 is a deficient number, since it is larger than the sum of its proper divisors (670234341658).

1340433688442 is a wasteful number, since it uses less digits than its factorization.

1340433688442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5832480.

The product of its (nonzero) digits is 5308416, while the sum is 50.

The spelling of 1340433688442 in words is "one trillion, three hundred forty billion, four hundred thirty-three million, six hundred eighty-eight thousand, four hundred forty-two".