1340337 has 8 divisors (see below), whose sum is σ = 1795840. Its totient is φ = 889200.

The previous prime is 1340333. The next prime is 1340357. The reversal of 1340337 is 7330431.

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

It is not a de Polignac number, because 1340337 - 2² = 1340333 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1340333) 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, 289 + ... + 1662.

It is an arithmetic number, because the mean of its divisors is an integer number (224480).

2^1340337 is an apocalyptic number.

It is an amenable number.

1340337 is a deficient number, since it is larger than the sum of its proper divisors (455503).

1340337 is a wasteful number, since it uses less digits than its factorization.

1340337 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2183.

The product of its (nonzero) digits is 756, while the sum is 21.

The square root of 1340337 is about 1157.7292429580. The cubic root of 1340337 is about 110.2566185012.

Adding to 1340337 its reverse (7330431), we get a palindrome (8670768).

The spelling of 1340337 in words is "one million, three hundred forty thousand, three hundred thirty-seven".