1340300240 has 20 divisors (see below), whose sum is σ = 3116198244. Its totient is φ = 536120064.

The previous prime is 1340300201. The next prime is 1340300249. The reversal of 1340300240 is 420030431.

It can be written as a sum of positive squares in 2 ways, for example, as 331094416 + 1009205824 = 18196^2 + 31768^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1340300249) 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, 8376797 + ... + 8376956.

Almost surely, 2^1340300240 is an apocalyptic number.

1340300240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1340300240 is an abundant number, since it is smaller than the sum of its proper divisors (1775898004).

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

1340300240 is a wasteful number, since it uses less digits than its factorization.

1340300240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16753766 (or 16753760 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 1340300240 is about 36610.1111716422. Note that the first 4 decimals coincide. The cubic root of 1340300240 is about 1102.5561052822.

Adding to 1340300240 its reverse (420030431), we get a palindrome (1760330671).

The spelling of 1340300240 in words is "one billion, three hundred forty million, three hundred thousand, two hundred forty".