3148421 has 2 divisors, whose sum is σ = 3148422. Its totient is φ = 3148420.

The previous prime is 3148399. The next prime is 3148459. The reversal of 3148421 is 1248413.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2927521 + 220900 = 1711^2 + 470^2 .

It is an emirp because it is prime and its reverse (1248413) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3148421 - 2¹⁴ = 3132037 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3148121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1574210 + 1574211.

It is an arithmetic number, because the mean of its divisors is an integer number (1574211).

Almost surely, 2^3148421 is an apocalyptic number.

It is an amenable number.

3148421 is a deficient number, since it is larger than the sum of its proper divisors (1).

3148421 is an equidigital number, since it uses as much as digits as its factorization.

3148421 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 768, while the sum is 23.

The square root of 3148421 is about 1774.3790463145. The cubic root of 3148421 is about 146.5652231253.

It can be divided in two parts, 31 and 48421, that multiplied together give a palindrome (1501051).

The spelling of 3148421 in words is "three million, one hundred forty-eight thousand, four hundred twenty-one".