3243140 has 24 divisors (see below), whose sum is σ = 6858432. Its totient is φ = 1288160.

The previous prime is 3243133. The next prime is 3243143. The reversal of 3243140 is 413423.

It is a super-3 number, since 3×3243140³ (a number of 21 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (3243143) 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, 2855 + ... + 3825.

It is an arithmetic number, because the mean of its divisors is an integer number (285768).

Almost surely, 2^3243140 is an apocalyptic number.

It is an amenable number.

3243140 is an abundant number, since it is smaller than the sum of its proper divisors (3615292).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3243140 is a wasteful number, since it uses less digits than its factorization.

3243140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1147 (or 1145 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 3243140 is about 1800.8720109991. The cubic root of 3243140 is about 148.0205109143.

Adding to 3243140 its reverse (413423), we get a palindrome (3656563).

The spelling of 3243140 in words is "three million, two hundred forty-three thousand, one hundred forty".