1340255356 has 72 divisors (see below), whose sum is σ = 2715769728. Its totient is φ = 573804000.

The previous prime is 1340255353. The next prime is 1340255363. The reversal of 1340255356 is 6535520431.

It is a Smith number, since the sum of its digits (34) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1340255353) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1652191 + ... + 1653001.

It is an arithmetic number, because the mean of its divisors is an integer number (37719024).

Almost surely, 2^1340255356 is an apocalyptic number.

It is an amenable number.

1340255356 is an abundant number, since it is smaller than the sum of its proper divisors (1375514372).

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

1340255356 is a wasteful number, since it uses less digits than its factorization.

1340255356 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 943 (or 918 counting only the distinct ones).

The product of its (nonzero) digits is 54000, while the sum is 34.

The square root of 1340255356 is about 36609.4981664595. The cubic root of 1340255356 is about 1102.5437976715.

Adding to 1340255356 its reverse (6535520431), we get a palindrome (7875775787).

The spelling of 1340255356 in words is "one billion, three hundred forty million, two hundred fifty-five thousand, three hundred fifty-six".