4567421 has 2 divisors, whose sum is σ = 4567422. Its totient is φ = 4567420.

The previous prime is 4567411. The next prime is 4567481. The reversal of 4567421 is 1247654.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4056196 + 511225 = 2014^2 + 715^2 .

It is a cyclic number.

It is not a de Polignac number, because 4567421 - 2⁶ = 4567357 is a prime.

It is a super-2 number, since 2×4567421² = 41722669182482, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4567411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2283710 + 2283711.

It is an arithmetic number, because the mean of its divisors is an integer number (2283711).

Almost surely, 2^4567421 is an apocalyptic number.

It is an amenable number.

4567421 is a deficient number, since it is larger than the sum of its proper divisors (1).

4567421 is an equidigital number, since it uses as much as digits as its factorization.

4567421 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6720, while the sum is 29.

The square root of 4567421 is about 2137.1525448596. The cubic root of 4567421 is about 165.9167943198.

The spelling of 4567421 in words is "four million, five hundred sixty-seven thousand, four hundred twenty-one".