5142321 has 6 divisors (see below), whose sum is σ = 7427810. Its totient is φ = 3428208.

The previous prime is 5142289. The next prime is 5142323. The reversal of 5142321 is 1232415.

It can be written as a sum of positive squares in only one way, i.e., 3111696 + 2030625 = 1764^2 + 1425^2 .

It is not a de Polignac number, because 5142321 - 2⁵ = 5142289 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 5142294 and 5142303.

It is not an unprimeable number, because it can be changed into a prime (5142323) 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 5 ways as a sum of consecutive naturals, for example, 285676 + ... + 285693.

Almost surely, 2^5142321 is an apocalyptic number.

It is an amenable number.

5142321 is a deficient number, since it is larger than the sum of its proper divisors (2285489).

5142321 is a wasteful number, since it uses less digits than its factorization.

5142321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 571375 (or 571372 counting only the distinct ones).

The product of its digits is 240, while the sum is 18.

The square root of 5142321 is about 2267.6686265855. The cubic root of 5142321 is about 172.6048763631.

Adding to 5142321 its reverse (1232415), we get a palindrome (6374736).

The spelling of 5142321 in words is "five million, one hundred forty-two thousand, three hundred twenty-one".