6434021 has 4 divisors (see below), whose sum is σ = 7018944. Its totient is φ = 5849100.

The previous prime is 6434011. The next prime is 6434033. The reversal of 6434021 is 1204346.

It is a happy number.

6434021 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6434021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 6433984 and 6434002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6434011) 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 in 3 ways as a sum of consecutive naturals, for example, 292445 + ... + 292466.

It is an arithmetic number, because the mean of its divisors is an integer number (1754736).

Almost surely, 2^6434021 is an apocalyptic number.

It is an amenable number.

6434021 is a deficient number, since it is larger than the sum of its proper divisors (584923).

6434021 is a wasteful number, since it uses less digits than its factorization.

6434021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 584922.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 6434021 is about 2536.5372065081. The cubic root of 6434021 is about 185.9919544059.

Adding to 6434021 its reverse (1204346), we get a palindrome (7638367).

It can be divided in two parts, 643 and 4021, that added together give a palindrome (4664).

The spelling of 6434021 in words is "six million, four hundred thirty-four thousand, twenty-one".