4280321 has 8 divisors (see below), whose sum is σ = 4371840. Its totient is φ = 4189968.

The previous prime is 4280267. The next prime is 4280329. The reversal of 4280321 is 1230824.

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 4280321 - 2⁶ = 4280257 is a prime.

It is a super-2 number, since 2×4280321² = 36642295726082, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 4280293 and 4280302.

It is not an unprimeable number, because it can be changed into a prime (4280329) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11480 + ... + 11846.

It is an arithmetic number, because the mean of its divisors is an integer number (546480).

It is a Proth number, since it is equal to 1045 ⋅ 2¹² + 1 and 1045 < 2¹².

Almost surely, 2^4280321 is an apocalyptic number.

It is an amenable number.

4280321 is a deficient number, since it is larger than the sum of its proper divisors (91519).

4280321 is a wasteful number, since it uses less digits than its factorization.

4280321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 583.

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 4280321 is about 2068.8936657064. The cubic root of 4280321 is about 162.3648865052.

It can be divided in two parts, 42803 and 21, that added together give a palindrome (42824).

The spelling of 4280321 in words is "four million, two hundred eighty thousand, three hundred twenty-one".