4267421 has 2 divisors, whose sum is σ = 4267422. Its totient is φ = 4267420.

The previous prime is 4267409. The next prime is 4267427. The reversal of 4267421 is 1247624.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2208196 + 2059225 = 1486^2 + 1435^2 .

It is a cyclic number.

It is not a de Polignac number, because 4267421 - 2¹⁰ = 4266397 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 (4267427) 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, 2133710 + 2133711.

It is an arithmetic number, because the mean of its divisors is an integer number (2133711).

Almost surely, 2^4267421 is an apocalyptic number.

It is an amenable number.

4267421 is a deficient number, since it is larger than the sum of its proper divisors (1).

4267421 is an equidigital number, since it uses as much as digits as its factorization.

4267421 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2688, while the sum is 26.

The square root of 4267421 is about 2065.7737049348. The cubic root of 4267421 is about 162.2016110014.

The spelling of 4267421 in words is "four million, two hundred sixty-seven thousand, four hundred twenty-one".