1340432441243 has 8 divisors (see below), whose sum is σ = 1563186520800. Its totient is φ = 1148942092200.

The previous prime is 1340432441197. The next prime is 1340432441279. The reversal of 1340432441243 is 3421442340431.

It is a de Polignac number, because none of the positive numbers 2^k-1340432441243 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1340432441443) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1953982808 + ... + 1953983493.

It is an arithmetic number, because the mean of its divisors is an integer number (195398315100).

Almost surely, 2^{1340432441243} is an apocalyptic number.

1340432441243 is a deficient number, since it is larger than the sum of its proper divisors (222754079557).

1340432441243 is an frugal number, since it uses more digits than its factorization.

1340432441243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3907966322 (or 3907966308 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 35.

Adding to 1340432441243 its reverse (3421442340431), we get a palindrome (4761874781674).

The spelling of 1340432441243 in words is "one trillion, three hundred forty billion, four hundred thirty-two million, four hundred forty-one thousand, two hundred forty-three".