1340943 has 8 divisors (see below), whose sum is σ = 1893168. Its totient is φ = 841344.

The previous prime is 1340929. The next prime is 1340947. The reversal of 1340943 is 3490431.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1340943 - 2⁶ = 1340879 is a prime.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1340947) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13096 + ... + 13197.

It is an arithmetic number, because the mean of its divisors is an integer number (236646).

2^1340943 is an apocalyptic number.

1340943 is a deficient number, since it is larger than the sum of its proper divisors (552225).

1340943 is a wasteful number, since it uses less digits than its factorization.

1340943 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26313.

The product of its (nonzero) digits is 1296, while the sum is 24.

The square root of 1340943 is about 1157.9909326070. The cubic root of 1340943 is about 110.2732325924.

The spelling of 1340943 in words is "one million, three hundred forty thousand, nine hundred forty-three".