5403421 has 4 divisors (see below), whose sum is σ = 5431612. Its totient is φ = 5375232.

The previous prime is 5403401. The next prime is 5403427. The reversal of 5403421 is 1243045.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1243045 = 5 ⋅248609.

It can be written as a sum of positive squares in 2 ways, for example, as 3404025 + 1999396 = 1845^2 + 1414^2 .

It is a cyclic number.

It is not a de Polignac number, because 5403421 - 2⁵ = 5403389 is a prime.

It is an Ulam number.

It is a Duffinian number.

5403421 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5403427) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13806 + ... + 14191.

It is an arithmetic number, because the mean of its divisors is an integer number (1357903).

Almost surely, 2^5403421 is an apocalyptic number.

It is an amenable number.

5403421 is a deficient number, since it is larger than the sum of its proper divisors (28191).

5403421 is a wasteful number, since it uses less digits than its factorization.

5403421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28190.

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 5403421 is about 2324.5259731825. The cubic root of 5403421 is about 175.4781048596.

Adding to 5403421 its reverse (1243045), we get a palindrome (6646466).

The spelling of 5403421 in words is "five million, four hundred three thousand, four hundred twenty-one".