6423121 has 8 divisors (see below), whose sum is σ = 6844320. Its totient is φ = 6010272.

The previous prime is 6423119. The next prime is 6423149. The reversal of 6423121 is 1213246.

6423121 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 6423121 - 2¹ = 6423119 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6423191) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 460 + ... + 3613.

It is an arithmetic number, because the mean of its divisors is an integer number (855540).

Almost surely, 2^6423121 is an apocalyptic number.

It is an amenable number.

6423121 is a deficient number, since it is larger than the sum of its proper divisors (421199).

6423121 is a wasteful number, since it uses less digits than its factorization.

6423121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4175.

The product of its digits is 288, while the sum is 19.

The square root of 6423121 is about 2534.3876972555. The cubic root of 6423121 is about 185.8868641770.

Adding to 6423121 its reverse (1213246), we get a palindrome (7636367).

The spelling of 6423121 in words is "six million, four hundred twenty-three thousand, one hundred twenty-one".