4220423 has 2 divisors, whose sum is σ = 4220424. Its totient is φ = 4220422.

The previous prime is 4220393. The next prime is 4220441. The reversal of 4220423 is 3240224.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 4220423 - 2¹² = 4216327 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4220473) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2110211 + 2110212.

It is an arithmetic number, because the mean of its divisors is an integer number (2110212).

Almost surely, 2^4220423 is an apocalyptic number.

4220423 is a deficient number, since it is larger than the sum of its proper divisors (1).

4220423 is an equidigital number, since it uses as much as digits as its factorization.

4220423 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 384, while the sum is 17.

The square root of 4220423 is about 2054.3668124266. The cubic root of 4220423 is about 161.6039581547.

Adding to 4220423 its reverse (3240224), we get a palindrome (7460647).

The spelling of 4220423 in words is "four million, two hundred twenty thousand, four hundred twenty-three".