5422421 has 2 divisors, whose sum is σ = 5422422. Its totient is φ = 5422420.

The previous prime is 5422399. The next prime is 5422441. The reversal of 5422421 is 1242245.

It is a happy number.

It is an a-pointer prime, because the next prime (5422441) can be obtained adding 5422421 to its sum of digits (20).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2907025 + 2515396 = 1705^2 + 1586^2 .

It is a cyclic number.

It is not a de Polignac number, because 5422421 - 2⁶ = 5422357 is a prime.

It is a super-3 number, since 3×5422421³ (a number of 21 digits) contains 333 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 5422393 and 5422402.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5422441) 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 as a sum of consecutive naturals, namely, 2711210 + 2711211.

It is an arithmetic number, because the mean of its divisors is an integer number (2711211).

Almost surely, 2^5422421 is an apocalyptic number.

It is an amenable number.

5422421 is a deficient number, since it is larger than the sum of its proper divisors (1).

5422421 is an equidigital number, since it uses as much as digits as its factorization.

5422421 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 640, while the sum is 20.

The square root of 5422421 is about 2328.6092415861. The cubic root of 5422421 is about 175.6835416091.

Adding to 5422421 its reverse (1242245), we get a palindrome (6664666).

It can be divided in two parts, 54224 and 21, that added together give a palindrome (54245).

The spelling of 5422421 in words is "five million, four hundred twenty-two thousand, four hundred twenty-one".