5243421 has 16 divisors (see below), whose sum is σ = 7188480. Its totient is φ = 3398640.

The previous prime is 5243419. The next prime is 5243423. The reversal of 5243421 is 1243425.

It is an interprime number because it is at equal distance from previous prime (5243419) and next prime (5243423).

It is not a de Polignac number, because 5243421 - 2¹ = 5243419 is a prime.

It is a d-powerful number, because it can be written as 5² + 2²⁰ + 4² + 3⁵ + 4⁴ + 2²² + 1 .

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5243423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21820 + ... + 22058.

It is an arithmetic number, because the mean of its divisors is an integer number (449280).

Almost surely, 2^5243421 is an apocalyptic number.

It is an amenable number.

5243421 is a deficient number, since it is larger than the sum of its proper divisors (1945059).

5243421 is a wasteful number, since it uses less digits than its factorization.

5243421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 416.

The product of its digits is 960, while the sum is 21.

The square root of 5243421 is about 2289.8517419257. The cubic root of 5243421 is about 173.7287025981.

Adding to 5243421 its reverse (1243425), we get a palindrome (6486846).

The spelling of 5243421 in words is "five million, two hundred forty-three thousand, four hundred twenty-one".