2140321 has 8 divisors (see below), whose sum is σ = 2195424. Its totient is φ = 2086080.

The previous prime is 2140309. The next prime is 2140337. The reversal of 2140321 is 1230412.

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 2140321 - 2¹³ = 2132129 is a prime.

It is a Duffinian number.

2140321 is a modest number, since divided by 321 gives 214 as remainder.

It is not an unprimeable number, because it can be changed into a prime (2140301) 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, 8761 + ... + 9001.

It is an arithmetic number, because the mean of its divisors is an integer number (274428).

2^2140321 is an apocalyptic number.

It is an amenable number.

2140321 is a deficient number, since it is larger than the sum of its proper divisors (55103).

2140321 is a wasteful number, since it uses less digits than its factorization.

2140321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 431.

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 2140321 is about 1462.9835952600. The cubic root of 2140321 is about 128.8723172258.

Adding to 2140321 its product of nonzero digits (48), we get a square (2140369 = 1463²).

Adding to 2140321 its reverse (1230412), we get a palindrome (3370733).

Subtracting from 2140321 its reverse (1230412), we obtain a palindrome (909909).

The spelling of 2140321 in words is "two million, one hundred forty thousand, three hundred twenty-one".