1340109 has 12 divisors (see below), whose sum is σ = 1968252. Its totient is φ = 878400.

The previous prime is 1340107. The next prime is 1340113. The reversal of 1340109 is 9010431.

It can be written as a sum of positive squares in 2 ways, for example, as 81225 + 1258884 = 285^2 + 1122^2 .

It is not a de Polignac number, because 1340109 - 2¹ = 1340107 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1340091 and 1340100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1340107) 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 11 ways as a sum of consecutive naturals, for example, 672 + ... + 1769.

It is an arithmetic number, because the mean of its divisors is an integer number (164021).

2^1340109 is an apocalyptic number.

It is an amenable number.

1340109 is a deficient number, since it is larger than the sum of its proper divisors (628143).

1340109 is a wasteful number, since it uses less digits than its factorization.

1340109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2508 (or 2505 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

The square root of 1340109 is about 1157.6307701508. The cubic root of 1340109 is about 110.2503663585.

The spelling of 1340109 in words is "one million, three hundred forty thousand, one hundred nine".