2123420928 has 36 divisors (see below), whose sum is σ = 5651398368. Its totient is φ = 707806720.

The previous prime is 2123420899. The next prime is 2123420947. The reversal of 2123420928 is 8290243212.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 1381668 + ... + 1383203.

It is an arithmetic number, because the mean of its divisors is an integer number (156983288).

Almost surely, 2^2123420928 is an apocalyptic number.

It is an amenable number.

2123420928 is an abundant number, since it is smaller than the sum of its proper divisors (3527977440).

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

2123420928 is an equidigital number, since it uses as much as digits as its factorization.

2123420928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2764890 (or 2764876 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 33.

The square root of 2123420928 is about 46080.5916628682. The cubic root of 2123420928 is about 1285.3222663181.

The spelling of 2123420928 in words is "two billion, one hundred twenty-three million, four hundred twenty thousand, nine hundred twenty-eight".