2123742912 has 112 divisors (see below), whose sum is σ = 5769937152. Its totient is φ = 689167360.

The previous prime is 2123742911. The next prime is 2123742919. The reversal of 2123742912 is 2192473212.

It is not an unprimeable number, because it can be changed into a prime (2123742911) 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, 1130518 + ... + 1132394.

It is an arithmetic number, because the mean of its divisors is an integer number (51517296).

Almost surely, 2^2123742912 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2123742912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2884968576).

2123742912 is an abundant number, since it is smaller than the sum of its proper divisors (3646194240).

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

2123742912 is a wasteful number, since it uses less digits than its factorization.

2123742912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2046 (or 2036 counting only the distinct ones).

The product of its digits is 12096, while the sum is 33.

The square root of 2123742912 is about 46084.0852355778. The cubic root of 2123742912 is about 1285.3872294605.

The spelling of 2123742912 in words is "two billion, one hundred twenty-three million, seven hundred forty-two thousand, nine hundred twelve".