5130421 has 2 divisors, whose sum is σ = 5130422. Its totient is φ = 5130420.

The previous prime is 5130409. The next prime is 5130443. The reversal of 5130421 is 1240315.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5130225 + 196 = 2265^2 + 14^2 .

It is a cyclic number.

It is not a de Polignac number, because 5130421 - 2²¹ = 3033269 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 5130395 and 5130404.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5130721) 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 as a sum of consecutive naturals, namely, 2565210 + 2565211.

It is an arithmetic number, because the mean of its divisors is an integer number (2565211).

Almost surely, 2^5130421 is an apocalyptic number.

It is an amenable number.

5130421 is a deficient number, since it is larger than the sum of its proper divisors (1).

5130421 is an equidigital number, since it uses as much as digits as its factorization.

5130421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 5130421 is about 2265.0432666949. The cubic root of 5130421 is about 172.4716301451.

Adding to 5130421 its reverse (1240315), we get a palindrome (6370736).

The spelling of 5130421 in words is "five million, one hundred thirty thousand, four hundred twenty-one".