1340843 has 16 divisors (see below), whose sum is σ = 1634304. Its totient is φ = 1075680.

The previous prime is 1340837. The next prime is 1340861. The reversal of 1340843 is 3480431.

It is a cyclic number.

It is not a de Polignac number, because 1340843 - 2⁴ = 1340827 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1340803) 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, 7946 + ... + 8112.

It is an arithmetic number, because the mean of its divisors is an integer number (102144).

2^1340843 is an apocalyptic number.

1340843 is a deficient number, since it is larger than the sum of its proper divisors (293461).

1340843 is a wasteful number, since it uses less digits than its factorization.

1340843 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 242.

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 1340843 is about 1157.9477535709. The cubic root of 1340843 is about 110.2704913381.

The spelling of 1340843 in words is "one million, three hundred forty thousand, eight hundred forty-three".