1340473 has 4 divisors (see below), whose sum is σ = 1376740. Its totient is φ = 1304208.

The previous prime is 1340459. The next prime is 1340477. The reversal of 1340473 is 3740431.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3740431 = 1069 ⋅3499.

It can be written as a sum of positive squares in 2 ways, for example, as 984064 + 356409 = 992^2 + 597^2 .

It is a cyclic number.

It is not a de Polignac number, because 1340473 - 2⁵ = 1340441 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1340477) 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, 18078 + ... + 18151.

It is an arithmetic number, because the mean of its divisors is an integer number (344185).

2^1340473 is an apocalyptic number.

It is an amenable number.

1340473 is a deficient number, since it is larger than the sum of its proper divisors (36267).

1340473 is an equidigital number, since it uses as much as digits as its factorization.

1340473 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36266.

The product of its (nonzero) digits is 1008, while the sum is 22.

The square root of 1340473 is about 1157.7879771357. The cubic root of 1340473 is about 110.2603475119.

The spelling of 1340473 in words is "one million, three hundred forty thousand, four hundred seventy-three".