1340055740 has 24 divisors (see below), whose sum is σ = 2836280832. Its totient is φ = 531800640.

The previous prime is 1340055737. The next prime is 1340055803. The reversal of 1340055740 is 475500431.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 261251 + ... + 266330.

It is an arithmetic number, because the mean of its divisors is an integer number (118178368).

Almost surely, 2^1340055740 is an apocalyptic number.

1340055740 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1340055740 is an abundant number, since it is smaller than the sum of its proper divisors (1496225092).

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

1340055740 is a wasteful number, since it uses less digits than its factorization.

1340055740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 527717 (or 527715 counting only the distinct ones).

The product of its (nonzero) digits is 8400, while the sum is 29.

The square root of 1340055740 is about 36606.7717779102. The cubic root of 1340055740 is about 1102.4890577771.

The spelling of 1340055740 in words is "one billion, three hundred forty million, fifty-five thousand, seven hundred forty".