5028421 has 4 divisors (see below), whose sum is σ = 5247072. Its totient is φ = 4809772.

The previous prime is 5028409. The next prime is 5028431. The reversal of 5028421 is 1248205.

5028421 = T₁₉₈ + T₁₉₉ + ... + T₃₃₅.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 5028421 - 2⁹ = 5027909 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 5028392 and 5028401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5028431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 109291 + ... + 109336.

It is an arithmetic number, because the mean of its divisors is an integer number (1311768).

Almost surely, 2^5028421 is an apocalyptic number.

It is an amenable number.

5028421 is a deficient number, since it is larger than the sum of its proper divisors (218651).

5028421 is a wasteful number, since it uses less digits than its factorization.

5028421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 218650.

The product of its (nonzero) digits is 640, while the sum is 22.

The square root of 5028421 is about 2242.4141009189. The cubic root of 5028421 is about 171.3209775576.

It can be divided in two parts, 50284 and 21, that added together give a palindrome (50305).

The spelling of 5028421 in words is "five million, twenty-eight thousand, four hundred twenty-one".