4272321 has 16 divisors (see below), whose sum is σ = 6350400. Its totient is φ = 2539008.

The previous prime is 4272311. The next prime is 4272341. The reversal of 4272321 is 1232724.

It is not a de Polignac number, because 4272321 - 2⁹ = 4271809 is a prime.

It is not an unprimeable number, because it can be changed into a prime (4272311) 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 15 ways as a sum of consecutive naturals, for example, 1236 + ... + 3173.

It is an arithmetic number, because the mean of its divisors is an integer number (396900).

Almost surely, 2^4272321 is an apocalyptic number.

It is an amenable number.

4272321 is a deficient number, since it is larger than the sum of its proper divisors (2078079).

4272321 is a wasteful number, since it uses less digits than its factorization.

4272321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4448.

The product of its digits is 672, while the sum is 21.

The square root of 4272321 is about 2066.9593609938. The cubic root of 4272321 is about 162.2636690834.

The spelling of 4272321 in words is "four million, two hundred seventy-two thousand, three hundred twenty-one".