2124423440 has 80 divisors (see below), whose sum is σ = 5210291520. Its totient is φ = 803335680.

The previous prime is 2124423409. The next prime is 2124423491. The reversal of 2124423440 is 443244212.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (80).

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 15 ways as a sum of consecutive naturals, for example, 891050 + ... + 893430.

It is an arithmetic number, because the mean of its divisors is an integer number (65128644).

Almost surely, 2^2124423440 is an apocalyptic number.

2124423440 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 2124423440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2605145760).

2124423440 is an abundant number, since it is smaller than the sum of its proper divisors (3085868080).

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

2124423440 is a wasteful number, since it uses less digits than its factorization.

2124423440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3000 (or 2994 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 26.

The square root of 2124423440 is about 46091.4681909787. The cubic root of 2124423440 is about 1285.5245104497.

Adding to 2124423440 its reverse (443244212), we get a palindrome (2567667652).

The spelling of 2124423440 in words is "two billion, one hundred twenty-four million, four hundred twenty-three thousand, four hundred forty".