3810421 has 2 divisors, whose sum is σ = 3810422. Its totient is φ = 3810420.

The previous prime is 3810419. The next prime is 3810461. The reversal of 3810421 is 1240183.

3810421 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3802500 + 7921 = 1950^2 + 89^2 .

It is a cyclic number.

It is not a de Polignac number, because 3810421 - 2¹ = 3810419 is a prime.

Together with 3810419, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3810461) 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, 1905210 + 1905211.

It is an arithmetic number, because the mean of its divisors is an integer number (1905211).

Almost surely, 2^3810421 is an apocalyptic number.

It is an amenable number.

3810421 is a deficient number, since it is larger than the sum of its proper divisors (1).

3810421 is an equidigital number, since it uses as much as digits as its factorization.

3810421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 192, while the sum is 19.

The square root of 3810421 is about 1952.0299690322. The cubic root of 3810421 is about 156.1915928898.

The spelling of 3810421 in words is "three million, eight hundred ten thousand, four hundred twenty-one".