1340241 has 16 divisors (see below), whose sum is σ = 2150400. Its totient is φ = 725328.

The previous prime is 1340237. The next prime is 1340243. The reversal of 1340241 is 1420431.

It is not a de Polignac number, because 1340241 - 2² = 1340237 is a prime.

1340241 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 1340241.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1340243) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1281 + ... + 2078.

It is an arithmetic number, because the mean of its divisors is an integer number (134400).

2^1340241 is an apocalyptic number.

It is an amenable number.

1340241 is a deficient number, since it is larger than the sum of its proper divisors (810159).

1340241 is a wasteful number, since it uses less digits than its factorization.

1340241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3388.

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 1340241 is about 1157.6877817443. The cubic root of 1340241 is about 110.2539861065.

Adding to 1340241 its reverse (1420431), we get a palindrome (2760672).

The spelling of 1340241 in words is "one million, three hundred forty thousand, two hundred forty-one".