1340253 has 8 divisors (see below), whose sum is σ = 1985600. Its totient is φ = 893484.

The previous prime is 1340243. The next prime is 1340281. The reversal of 1340253 is 3520431.

It is not a de Polignac number, because 1340253 - 2⁴ = 1340237 is a prime.

It is a Duffinian number.

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 7 ways as a sum of consecutive naturals, for example, 24793 + ... + 24846.

It is an arithmetic number, because the mean of its divisors is an integer number (248200).

2^1340253 is an apocalyptic number.

It is an amenable number.

1340253 is a deficient number, since it is larger than the sum of its proper divisors (645347).

1340253 is an equidigital number, since it uses as much as digits as its factorization.

1340253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49648 (or 49642 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 18.

The square root of 1340253 is about 1157.6929644772. The cubic root of 1340253 is about 110.2543151627.

Adding to 1340253 its reverse (3520431), we get a palindrome (4860684).

The spelling of 1340253 in words is "one million, three hundred forty thousand, two hundred fifty-three".