4291321 has 4 divisors (see below), whose sum is σ = 4517200. Its totient is φ = 4065444.

The previous prime is 4291319. The next prime is 4291337. The reversal of 4291321 is 1231924.

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 not a de Polignac number, because 4291321 - 2¹ = 4291319 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 4291292 and 4291301.

It is not an unprimeable number, because it can be changed into a prime (4291381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 112911 + ... + 112948.

It is an arithmetic number, because the mean of its divisors is an integer number (1129300).

Almost surely, 2^4291321 is an apocalyptic number.

It is an amenable number.

4291321 is a deficient number, since it is larger than the sum of its proper divisors (225879).

4291321 is a wasteful number, since it uses less digits than its factorization.

4291321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 225878.

The product of its digits is 432, while the sum is 22.

The square root of 4291321 is about 2071.5503855808. The cubic root of 4291321 is about 162.5038547409.

The spelling of 4291321 in words is "four million, two hundred ninety-one thousand, three hundred twenty-one".