1340740020 has 48 divisors (see below), whose sum is σ = 3974902848. Its totient is φ = 336499200.

The previous prime is 1340740019. The next prime is 1340740021. The reversal of 1340740020 is 200470431.

1340740020 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (1340740019) and next prime (1340740021).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1340740021) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 656206 + ... + 658245.

It is an arithmetic number, because the mean of its divisors is an integer number (82810476).

Almost surely, 2^1340740020 is an apocalyptic number.

1340740020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1340740020 is an abundant number, since it is smaller than the sum of its proper divisors (2634162828).

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

1340740020 is a wasteful number, since it uses less digits than its factorization.

1340740020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1314480 (or 1314478 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 21.

The square root of 1340740020 is about 36616.1169432260. The cubic root of 1340740020 is about 1102.6766825195.

The spelling of 1340740020 in words is "one billion, three hundred forty million, seven hundred forty thousand, twenty".