3240121140 has 144 divisors (see below), whose sum is σ = 10035763920. Its totient is φ = 845936640.

The previous prime is 3240121127. The next prime is 3240121163. The reversal of 3240121140 is 411210423.

It can be written as a sum of positive squares in 8 ways, for example, as 1497225636 + 1742895504 = 38694^2 + 41748^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2953072 + ... + 2954168.

It is an arithmetic number, because the mean of its divisors is an integer number (69692805).

Almost surely, 2^3240121140 is an apocalyptic number.

3240121140 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3240121140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5017881960).

3240121140 is an abundant number, since it is smaller than the sum of its proper divisors (6795642780).

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

3240121140 is a wasteful number, since it uses less digits than its factorization.

3240121140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1442 (or 1437 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 3240121140 is about 56922.0619795172. The cubic root of 3240121140 is about 1479.7456861543.

Adding to 3240121140 its reverse (411210423), we get a palindrome (3651331563).

The spelling of 3240121140 in words is "three billion, two hundred forty million, one hundred twenty-one thousand, one hundred forty".