4290321 has 8 divisors (see below), whose sum is σ = 6537664. Its totient is φ = 2451600.

The previous prime is 4290311. The next prime is 4290331. The reversal of 4290321 is 1230924.

It is an interprime number because it is at equal distance from previous prime (4290311) and next prime (4290331).

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

It is not a de Polignac number, because 4290321 - 2⁷ = 4290193 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21), and also a Moran number because the ratio is a prime number: 204301 = 4290321 / (4 + 2 + 9 + 0 + 3 + 2 + 1).

It is a Curzon number.

4290321 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (4290311) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 102130 + ... + 102171.

It is an arithmetic number, because the mean of its divisors is an integer number (817208).

Almost surely, 2^4290321 is an apocalyptic number.

It is an amenable number.

4290321 is a deficient number, since it is larger than the sum of its proper divisors (2247343).

4290321 is a wasteful number, since it uses less digits than its factorization.

4290321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 204311.

The product of its (nonzero) digits is 432, while the sum is 21.

The square root of 4290321 is about 2071.3090064015. The cubic root of 4290321 is about 162.4912310850.

It can be divided in two parts, 42903 and 21, that added together give a palindrome (42924).

The spelling of 4290321 in words is "four million, two hundred ninety thousand, three hundred twenty-one".