4234421 has 2 divisors, whose sum is σ = 4234422. Its totient is φ = 4234420.

The previous prime is 4234409. The next prime is 4234423. The reversal of 4234421 is 1244324.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2235025 + 1999396 = 1495^2 + 1414^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4234421 is a prime.

Together with 4234423, it forms a pair of twin primes.

It is a Chen prime.

It is a plaindrome in base 15.

It is a junction number, because it is equal to n+sod(n) for n = 4234393 and 4234402.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4234423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2117210 + 2117211.

It is an arithmetic number, because the mean of its divisors is an integer number (2117211).

Almost surely, 2^4234421 is an apocalyptic number.

It is an amenable number.

4234421 is a deficient number, since it is larger than the sum of its proper divisors (1).

4234421 is an equidigital number, since it uses as much as digits as its factorization.

4234421 is an evil number, because the sum of its binary digits is even.

The product of its digits is 768, while the sum is 20.

The square root of 4234421 is about 2057.7708813179. The cubic root of 4234421 is about 161.7824265092.

Adding to 4234421 its reverse (1244324), we get a palindrome (5478745).

The spelling of 4234421 in words is "four million, two hundred thirty-four thousand, four hundred twenty-one".