2402321 has 8 divisors (see below), whose sum is σ = 2558304. Its totient is φ = 2248000.

The previous prime is 2402317. The next prime is 2402329. The reversal of 2402321 is 1232042.

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 2402321 - 2² = 2402317 is a prime.

It is a super-2 number, since 2×2402321² = 11542292374082, which contains 22 as substring.

It is an Ulam number.

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 = 2402296 and 2402305.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2402329) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3986 + ... + 4548.

It is an arithmetic number, because the mean of its divisors is an integer number (319788).

2^2402321 is an apocalyptic number.

It is an amenable number.

2402321 is a deficient number, since it is larger than the sum of its proper divisors (155983).

2402321 is a wasteful number, since it uses less digits than its factorization.

2402321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 831.

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

The square root of 2402321 is about 1549.9422569889. The cubic root of 2402321 is about 133.9297359408.

Adding to 2402321 its reverse (1232042), we get a palindrome (3634363).

It can be divided in two parts, 240 and 2321, that multiplied together give a triangular number (557040 = T₁₀₅₅).

The spelling of 2402321 in words is "two million, four hundred two thousand, three hundred twenty-one".