5242021 has 2 divisors, whose sum is σ = 5242022. Its totient is φ = 5242020.

The previous prime is 5241989. The next prime is 5242067. The reversal of 5242021 is 1202425.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5239521 + 2500 = 2289^2 + 50^2 .

It is a cyclic number.

It is not a de Polignac number, because 5242021 - 2⁵ = 5241989 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 5241986 and 5242004.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5242421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2621010 + 2621011.

It is an arithmetic number, because the mean of its divisors is an integer number (2621011).

Almost surely, 2^5242021 is an apocalyptic number.

It is an amenable number.

5242021 is a deficient number, since it is larger than the sum of its proper divisors (1).

5242021 is an equidigital number, since it uses as much as digits as its factorization.

5242021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 160, while the sum is 16.

The square root of 5242021 is about 2289.5460248704. The cubic root of 5242021 is about 173.7132392944.

Adding to 5242021 its reverse (1202425), we get a palindrome (6444446).

It can be divided in two parts, 52420 and 21, that added together give a square (52441 = 229²).

The spelling of 5242021 in words is "five million, two hundred forty-two thousand, twenty-one".