1340238156 has 24 divisors (see below), whose sum is σ = 3144697920. Its totient is φ = 444249552.

The previous prime is 1340238113. The next prime is 1340238157. The reversal of 1340238156 is 6518320431.

1340238156 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (1340238157) 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, 309826 + ... + 314121.

It is an arithmetic number, because the mean of its divisors is an integer number (131029080).

Almost surely, 2^1340238156 is an apocalyptic number.

It is an amenable number.

1340238156 is an abundant number, since it is smaller than the sum of its proper divisors (1804459764).

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

1340238156 is a wasteful number, since it uses less digits than its factorization.

1340238156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 624133 (or 624131 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 33.

The square root of 1340238156 is about 36609.2632539908. The cubic root of 1340238156 is about 1102.5390811985.

Adding to 1340238156 its reverse (6518320431), we get a palindrome (7858558587).

The spelling of 1340238156 in words is "one billion, three hundred forty million, two hundred thirty-eight thousand, one hundred fifty-six".