20140242240 has 112 divisors (see below), whose sum is σ = 64018241280. Its totient is φ = 5364602880.

The previous prime is 20140242209. The next prime is 20140242247. The reversal of 20140242240 is 4224204102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20140242247) 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, 863046 + ... + 886074.

It is an arithmetic number, because the mean of its divisors is an integer number (571591440).

Almost surely, 2^20140242240 is an apocalyptic number.

20140242240 is a gapful number since it is divisible by the number (20) 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 20140242240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32009120640).

20140242240 is an abundant number, since it is smaller than the sum of its proper divisors (43877999040).

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

20140242240 is a wasteful number, since it uses less digits than its factorization.

20140242240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23960 (or 23950 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 21.

Adding to 20140242240 its reverse (4224204102), we get a palindrome (24364446342).

The spelling of 20140242240 in words is "twenty billion, one hundred forty million, two hundred forty-two thousand, two hundred forty".