1340507 has 8 divisors (see below), whose sum is σ = 1612800. Its totient is φ = 1088424.

The previous prime is 1340497. The next prime is 1340527. The reversal of 1340507 is 7050431.

1340507 = 169² + 170² + ... + 206².

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 1340507 - 2⁴ = 1340491 is a prime.

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 7 ways as a sum of consecutive naturals, for example, 4907 + ... + 5172.

It is an arithmetic number, because the mean of its divisors is an integer number (201600).

2^1340507 is an apocalyptic number.

1340507 is a deficient number, since it is larger than the sum of its proper divisors (272293).

1340507 is a wasteful number, since it uses less digits than its factorization.

1340507 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10105.

The product of its (nonzero) digits is 420, while the sum is 20.

The square root of 1340507 is about 1157.8026602146. The cubic root of 1340507 is about 110.2612797251.

Adding to 1340507 its reverse (7050431), we get a palindrome (8390938).

The spelling of 1340507 in words is "one million, three hundred forty thousand, five hundred seven".