1340510520 has 64 divisors (see below), whose sum is σ = 4258098720. Its totient is φ = 336441344.

The previous prime is 1340510497. The next prime is 1340510531. The reversal of 1340510520 is 250150431.

1340510520 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 326517 + ... + 330596.

Almost surely, 2^1340510520 is an apocalyptic number.

1340510520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1340510520 is an abundant number, since it is smaller than the sum of its proper divisors (2917588200).

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

1340510520 is a wasteful number, since it uses less digits than its factorization.

1340510520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 657144 (or 657140 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 21.

The square root of 1340510520 is about 36612.9829432129. The cubic root of 1340510520 is about 1102.6137623571.

Adding to 1340510520 its reverse (250150431), we get a palindrome (1590660951).

The spelling of 1340510520 in words is "one billion, three hundred forty million, five hundred ten thousand, five hundred twenty".