2123459712 has 320 divisors, whose sum is σ = 7070484960. Its totient is φ = 627056640.

The previous prime is 2123459707. The next prime is 2123459719. The reversal of 2123459712 is 2179543212.

2123459712 is a `hidden beast` number, since 21 + 2 + 34 + 597 + 12 = 666.

It is a super-2 number, since 2×2123459712² = 9018162296974245888, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (2123459719) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 4903848 + ... + 4904280.

Almost surely, 2^2123459712 is an apocalyptic number.

2123459712 is a gapful number since it is divisible by the number (22) 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 2123459712, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3535242480).

2123459712 is an abundant number, since it is smaller than the sum of its proper divisors (4947025248).

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

2123459712 is a wasteful number, since it uses less digits than its factorization.

2123459712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 513 (or 492 counting only the distinct ones).

The product of its digits is 30240, while the sum is 36.

The square root of 2123459712 is about 46081.0124888766. The cubic root of 2123459712 is about 1285.3300916837.

The spelling of 2123459712 in words is "two billion, one hundred twenty-three million, four hundred fifty-nine thousand, seven hundred twelve".