1340140420303 has 4 divisors (see below), whose sum is σ = 1340783792728. Its totient is φ = 1339497047880.

The previous prime is 1340140420273. The next prime is 1340140420321. The reversal of 1340140420303 is 3030240410431.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1340140420303 - 2³⁷ = 1202701466831 is a prime.

It is a super-2 number, since 2×1340140420303² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1340140427303) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 321683088 + ... + 321687253.

It is an arithmetic number, because the mean of its divisors is an integer number (335195948182).

Almost surely, 2^{1340140420303} is an apocalyptic number.

1340140420303 is a deficient number, since it is larger than the sum of its proper divisors (643372425).

1340140420303 is an equidigital number, since it uses as much as digits as its factorization.

1340140420303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 643372424.

The product of its (nonzero) digits is 3456, while the sum is 25.

Adding to 1340140420303 its reverse (3030240410431), we get a palindrome (4370380830734).

The spelling of 1340140420303 in words is "one trillion, three hundred forty billion, one hundred forty million, four hundred twenty thousand, three hundred three".