1001340 has 36 divisors (see below), whose sum is σ = 3037944. Its totient is φ = 266976.

The previous prime is 1001327. The next prime is 1001347. The reversal of 1001340 is 431001.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1001347) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 2602 + ... + 2961.

2^1001340 is an apocalyptic number.

1001340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1001340 is an abundant number, since it is smaller than the sum of its proper divisors (2036604).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1001340 is a wasteful number, since it uses less digits than its factorization.

1001340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5578 (or 5573 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 9.

The square root of 1001340 is about 1000.6697757003. The cubic root of 1001340 is about 100.0446467304.

Adding to 1001340 its reverse (431001), we get a palindrome (1432341).

The spelling of 1001340 in words is "one million, one thousand, three hundred forty".