3540321 has 16 divisors (see below), whose sum is σ = 5473920. Its totient is φ = 2257200.

The previous prime is 3540311. The next prime is 3540323. The reversal of 3540321 is 1230453.

It is not a de Polignac number, because 3540321 - 2¹⁰ = 3539297 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 3540294 and 3540303.

It is not an unprimeable number, because it can be changed into a prime (3540323) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2230 + ... + 3471.

It is an arithmetic number, because the mean of its divisors is an integer number (342120).

Almost surely, 2^3540321 is an apocalyptic number.

It is an amenable number.

3540321 is a deficient number, since it is larger than the sum of its proper divisors (1933599).

3540321 is a wasteful number, since it uses less digits than its factorization.

3540321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5733 (or 5727 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 18.

The square root of 3540321 is about 1881.5740750765. The cubic root of 3540321 is about 152.4102634293.

Adding to 3540321 its reverse (1230453), we get a palindrome (4770774).

The spelling of 3540321 in words is "three million, five hundred forty thousand, three hundred twenty-one".