5242421 has 2 divisors, whose sum is σ = 5242422. Its totient is φ = 5242420.

The previous prime is 5242411. The next prime is 5242439. The reversal of 5242421 is 1242425.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4452100 + 790321 = 2110^2 + 889^2 .

It is a cyclic number.

It is not a de Polignac number, because 5242421 - 2⁶ = 5242357 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 5242393 and 5242402.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5242411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2621210 + 2621211.

It is an arithmetic number, because the mean of its divisors is an integer number (2621211).

Almost surely, 2^5242421 is an apocalyptic number.

It is an amenable number.

5242421 is a deficient number, since it is larger than the sum of its proper divisors (1).

5242421 is an equidigital number, since it uses as much as digits as its factorization.

5242421 is an evil number, because the sum of its binary digits is even.

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

The square root of 5242421 is about 2289.6333767658. The cubic root of 5242421 is about 173.7176576621.

Adding to 5242421 its reverse (1242425), we get a palindrome (6484846).

The spelling of 5242421 in words is "five million, two hundred forty-two thousand, four hundred twenty-one".