12140240 has 120 divisors (see below), whose sum is σ = 34774560. Its totient is φ = 3919104.

The previous prime is 12140237. The next prime is 12140243. The reversal of 12140240 is 4204121.

It is an interprime number because it is at equal distance from previous prime (12140237) and next prime (12140243).

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12140243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 74399 + ... + 74561.

It is an arithmetic number, because the mean of its divisors is an integer number (289788).

Almost surely, 2^12140240 is an apocalyptic number.

12140240 is a gapful number since it is divisible by the number (10) 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 12140240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17387280).

12140240 is an abundant number, since it is smaller than the sum of its proper divisors (22634320).

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

12140240 is a wasteful number, since it uses less digits than its factorization.

12140240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 209 (or 196 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 14.

The square root of 12140240 is about 3484.2847185613. The cubic root of 12140240 is about 229.8312561904.

Adding to 12140240 its reverse (4204121), we get a palindrome (16344361).

The spelling of 12140240 in words is "twelve million, one hundred forty thousand, two hundred forty".