1343421 has 6 divisors (see below), whose sum is σ = 1940510. Its totient is φ = 895608.

The previous prime is 1343413. The next prime is 1343423. The reversal of 1343421 is 1243431.

It can be written as a sum of positive squares in only one way, i.e., 1179396 + 164025 = 1086^2 + 405^2 .

It is not a de Polignac number, because 1343421 - 2³ = 1343413 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1343394 and 1343403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1343423) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 74626 + ... + 74643.

2^1343421 is an apocalyptic number.

It is an amenable number.

1343421 is a deficient number, since it is larger than the sum of its proper divisors (597089).

1343421 is a wasteful number, since it uses less digits than its factorization.

1343421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149275 (or 149272 counting only the distinct ones).

The product of its digits is 288, while the sum is 18.

The square root of 1343421 is about 1159.0603953203. The cubic root of 1343421 is about 110.3411173871.

Adding to 1343421 its reverse (1243431), we get a palindrome (2586852).

It can be divided in two parts, 1343 and 421, that added together give a square (1764 = 42²).

The spelling of 1343421 in words is "one million, three hundred forty-three thousand, four hundred twenty-one".