1340400040532 has 72 divisors (see below), whose sum is σ = 2755982653704. Its totient is φ = 568733937408.

The previous prime is 1340400040531. The next prime is 1340400040579. The reversal of 1340400040532 is 2350400040431.

It can be written as a sum of positive squares in 4 ways, for example, as 55523381956 + 1284876658576 = 235634^2 + 1133524^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1340400040531) 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 23 ways as a sum of consecutive naturals, for example, 8445218 + ... + 8602470.

It is an arithmetic number, because the mean of its divisors is an integer number (38277536857).

Almost surely, 2^{1340400040532} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1340400040532, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1377991326852).

1340400040532 is an abundant number, since it is smaller than the sum of its proper divisors (1415582613172).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1340400040532 is a wasteful number, since it uses less digits than its factorization.

1340400040532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157705 (or 157696 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 26.

Adding to 1340400040532 its reverse (2350400040431), we get a palindrome (3690800080963).

The spelling of 1340400040532 in words is "one trillion, three hundred forty billion, four hundred million, forty thousand, five hundred thirty-two".