4130321 has 4 divisors (see below), whose sum is σ = 4448052. Its totient is φ = 3812592.

The previous prime is 4130309. The next prime is 4130323. The reversal of 4130321 is 1230314.

4130321 = 386² + 387² + ... + 411².

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 190096 + 3940225 = 436^2 + 1985^2 .

It is a cyclic number.

It is not a de Polignac number, because 4130321 - 2¹⁸ = 3868177 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 4130296 and 4130305.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4130323) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 158846 + ... + 158871.

It is an arithmetic number, because the mean of its divisors is an integer number (1112013).

Almost surely, 2^4130321 is an apocalyptic number.

It is an amenable number.

4130321 is a deficient number, since it is larger than the sum of its proper divisors (317731).

4130321 is a wasteful number, since it uses less digits than its factorization.

4130321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 317730.

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 4130321 is about 2032.3191186425. The cubic root of 4130321 is about 160.4456456183.

Adding to 4130321 its reverse (1230314), we get a palindrome (5360635).

It can be divided in two parts, 4 and 130321, that multiplied together give a square (521284 = 722²).

The spelling of 4130321 in words is "four million, one hundred thirty thousand, three hundred twenty-one".