1340133940 has 12 divisors (see below), whose sum is σ = 2814281316. Its totient is φ = 536053568.

The previous prime is 1340133931. The next prime is 1340133941. The reversal of 1340133940 is 493310431.

It can be written as a sum of positive squares in 2 ways, for example, as 357436836 + 982697104 = 18906^2 + 31348^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1340133899 and 1340133908.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1340133941) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33503329 + ... + 33503368.

It is an arithmetic number, because the mean of its divisors is an integer number (234523443).

Almost surely, 2^1340133940 is an apocalyptic number.

1340133940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1340133940 is an abundant number, since it is smaller than the sum of its proper divisors (1474147376).

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

1340133940 is a wasteful number, since it uses less digits than its factorization.

1340133940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67006706 (or 67006704 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 28.

The square root of 1340133940 is about 36607.8398707162. The cubic root of 1340133940 is about 1102.5105028968.

The spelling of 1340133940 in words is "one billion, three hundred forty million, one hundred thirty-three thousand, nine hundred forty".