2123509704 has 32 divisors (see below), whose sum is σ = 5318956320. Its totient is φ = 706478976.

The previous prime is 2123509681. The next prime is 2123509781. The reversal of 2123509704 is 4079053212.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 72037 + ... + 97140.

It is an arithmetic number, because the mean of its divisors is an integer number (166217385).

Almost surely, 2^2123509704 is an apocalyptic number.

2123509704 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

2123509704 is an abundant number, since it is smaller than the sum of its proper divisors (3195446616).

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

2123509704 is a wasteful number, since it uses less digits than its factorization.

2123509704 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 169709 (or 169705 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 33.

The square root of 2123509704 is about 46081.5549216821. The cubic root of 2123509704 is about 1285.3401783232.

The spelling of 2123509704 in words is "two billion, one hundred twenty-three million, five hundred nine thousand, seven hundred four".