1340523 has 16 divisors (see below), whose sum is σ = 2006400. Its totient is φ = 884520.

The previous prime is 1340497. The next prime is 1340527. The reversal of 1340523 is 3250431.

It is not a de Polignac number, because 1340523 - 2⁵ = 1340491 is a prime.

1340523 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 1340496 and 1340505.

It is not an unprimeable number, because it can be changed into a prime (1340527) 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 15 ways as a sum of consecutive naturals, for example, 3348 + ... + 3726.

It is an arithmetic number, because the mean of its divisors is an integer number (125400).

2^1340523 is an apocalyptic number.

1340523 is a deficient number, since it is larger than the sum of its proper divisors (665877).

1340523 is a wasteful number, since it uses less digits than its factorization.

1340523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 519 (or 513 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 18.

The square root of 1340523 is about 1157.8095698343. The cubic root of 1340523 is about 110.2617184083.

Adding to 1340523 its reverse (3250431), we get a palindrome (4590954).

The spelling of 1340523 in words is "one million, three hundred forty thousand, five hundred twenty-three".