1340985 has 8 divisors (see below), whose sum is σ = 2145600. Its totient is φ = 715184.

The previous prime is 1340981. The next prime is 1341007. The reversal of 1340985 is 5890431.

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 1340985 - 2² = 1340981 is a prime.

1340985 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (1340981) 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, 44685 + ... + 44714.

It is an arithmetic number, because the mean of its divisors is an integer number (268200).

2^1340985 is an apocalyptic number.

1340985 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1340985 is a deficient number, since it is larger than the sum of its proper divisors (804615).

1340985 is an equidigital number, since it uses as much as digits as its factorization.

1340985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89407.

The product of its (nonzero) digits is 4320, while the sum is 30.

The square root of 1340985 is about 1158.0090673220. The cubic root of 1340985 is about 110.2743838786.

The spelling of 1340985 in words is "one million, three hundred forty thousand, nine hundred eighty-five".