2124520140 has 96 divisors (see below), whose sum is σ = 6042516480. Its totient is φ = 557646336.

The previous prime is 2124520121. The next prime is 2124520147. The reversal of 2124520140 is 410254212.

It is not an unprimeable number, because it can be changed into a prime (2124520147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2478592 + ... + 2479448.

It is an arithmetic number, because the mean of its divisors is an integer number (62942880).

Almost surely, 2^2124520140 is an apocalyptic number.

2124520140 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 2124520140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3021258240).

2124520140 is an abundant number, since it is smaller than the sum of its proper divisors (3917996340).

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

2124520140 is a wasteful number, since it uses less digits than its factorization.

2124520140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1471 (or 1469 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 21.

The square root of 2124520140 is about 46092.5171801237. The cubic root of 2124520140 is about 1285.5440150883.

Adding to 2124520140 its reverse (410254212), we get a palindrome (2534774352).

The spelling of 2124520140 in words is "two billion, one hundred twenty-four million, five hundred twenty thousand, one hundred forty".