2123125704 has 144 divisors (see below), whose sum is σ = 6706213020. Its totient is φ = 605041920.

The previous prime is 2123125663. The next prime is 2123125717. The reversal of 2123125704 is 4075213212.

It can be written as a sum of positive squares in 2 ways, for example, as 2038522500 + 84603204 = 45150^2 + 9198^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 2585614 + ... + 2586434.

Almost surely, 2^2123125704 is an apocalyptic number.

2123125704 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 2123125704, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3353106510).

2123125704 is an abundant number, since it is smaller than the sum of its proper divisors (4583087316).

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

2123125704 is a wasteful number, since it uses less digits than its factorization.

2123125704 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1580 (or 1566 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 27.

The square root of 2123125704 is about 46077.3882072324. The cubic root of 2123125704 is about 1285.2626964729.

Adding to 2123125704 its reverse (4075213212), we get a palindrome (6198338916).

The spelling of 2123125704 in words is "two billion, one hundred twenty-three million, one hundred twenty-five thousand, seven hundred four".