2042321 has 8 divisors (see below), whose sum is σ = 2098344. Its totient is φ = 1987200.

The previous prime is 2042317. The next prime is 2042323. The reversal of 2042321 is 1232402.

It can be written as a sum of positive squares in 4 ways, for example, as 541696 + 1500625 = 736^2 + 1225^2 .

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 2042321 - 2² = 2042317 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 = 2042296 and 2042305.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2042323) 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, 7235 + ... + 7511.

It is an arithmetic number, because the mean of its divisors is an integer number (262293).

2^2042321 is an apocalyptic number.

It is an amenable number.

2042321 is a deficient number, since it is larger than the sum of its proper divisors (56023).

2042321 is a wasteful number, since it uses less digits than its factorization.

2042321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 451.

The product of its (nonzero) digits is 96, while the sum is 14.

The square root of 2042321 is about 1429.0979672507. The cubic root of 2042321 is about 126.8745946261.

Adding to 2042321 its reverse (1232402), we get a palindrome (3274723).

The spelling of 2042321 in words is "two million, forty-two thousand, three hundred twenty-one".