1343340 has 72 divisors (see below), whose sum is σ = 4324320. Its totient is φ = 336384.

The previous prime is 1343333. The next prime is 1343341. The reversal of 1343340 is 433431.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an Ulam number.

It is a nialpdrome in base 6.

It is not an unprimeable number, because it can be changed into a prime (1343341) 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 23 ways as a sum of consecutive naturals, for example, 2841 + ... + 3279.

It is an arithmetic number, because the mean of its divisors is an integer number (60060).

2^1343340 is an apocalyptic number.

1343340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1343340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2162160).

1343340 is an abundant number, since it is smaller than the sum of its proper divisors (2980980).

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

1343340 is a wasteful number, since it uses less digits than its factorization.

1343340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 471 (or 466 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 18.

The square root of 1343340 is about 1159.0254526972. The cubic root of 1343340 is about 110.3388997130.

Adding to 1343340 its reverse (433431), we get a palindrome (1776771).

Subtracting from 1343340 its reverse (433431), we obtain a palindrome (909909).

The spelling of 1343340 in words is "one million, three hundred forty-three thousand, three hundred forty".