2121423024 has 160 divisors (see below), whose sum is σ = 6388480000. Its totient is φ = 594127872.

The previous prime is 2121422999. The next prime is 2121423043. The reversal of 2121423024 is 4203241212.

2121423024 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6078402 + ... + 6078750.

It is an arithmetic number, because the mean of its divisors is an integer number (39928000).

Almost surely, 2^2121423024 is an apocalyptic number.

2121423024 is a gapful number since it is divisible by the number (24) 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 2121423024, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3194240000).

2121423024 is an abundant number, since it is smaller than the sum of its proper divisors (4267056976).

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

2121423024 is a wasteful number, since it uses less digits than its factorization.

2121423024 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 675 (or 669 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 2121423024 is about 46058.9081937468. The cubic root of 2121423024 is about 1284.9190245067.

Adding to 2121423024 its reverse (4203241212), we get a palindrome (6324664236).

The spelling of 2121423024 in words is "two billion, one hundred twenty-one million, four hundred twenty-three thousand, twenty-four".