1340255 has 16 divisors (see below), whose sum is σ = 1857600. Its totient is φ = 909312.

The previous prime is 1340243. The next prime is 1340281. The reversal of 1340255 is 5520431.

It is a cyclic number.

It is not a de Polignac number, because 1340255 - 2¹⁴ = 1323871 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5087 + ... + 5343.

It is an arithmetic number, because the mean of its divisors is an integer number (116100).

2^1340255 is an apocalyptic number.

1340255 is a deficient number, since it is larger than the sum of its proper divisors (517345).

1340255 is a wasteful number, since it uses less digits than its factorization.

1340255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 418.

The product of its (nonzero) digits is 600, while the sum is 20.

The square root of 1340255 is about 1157.6938282638. The cubic root of 1340255 is about 110.2543700052.

Adding to 1340255 its reverse (5520431), we get a palindrome (6860686).

The spelling of 1340255 in words is "one million, three hundred forty thousand, two hundred fifty-five".