1340241765 has 16 divisors (see below), whose sum is σ = 2144842368. Its totient is φ = 714643776.

The previous prime is 1340241731. The next prime is 1340241769. The reversal of 1340241765 is 5671420431.

It is a de Polignac number, because none of the positive numbers 2^k-1340241765 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1340241769) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 124539 + ... + 134871.

It is an arithmetic number, because the mean of its divisors is an integer number (134052648).

Almost surely, 2^1340241765 is an apocalyptic number.

1340241765 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1340241765 is a deficient number, since it is larger than the sum of its proper divisors (804600603).

1340241765 is a wasteful number, since it uses less digits than its factorization.

1340241765 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18988.

The product of its (nonzero) digits is 20160, while the sum is 33.

The square root of 1340241765 is about 36609.3125447611. The cubic root of 1340241765 is about 1102.5400708386.

The spelling of 1340241765 in words is "one billion, three hundred forty million, two hundred forty-one thousand, seven hundred sixty-five".