2143128238 has 16 divisors (see below), whose sum is σ = 3241296000. Its totient is φ = 1062724536.

The previous prime is 2143128227. The next prime is 2143128241. The reversal of 2143128238 is 8328213412.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 152013 + ... + 165511.

It is an arithmetic number, because the mean of its divisors is an integer number (202581000).

Almost surely, 2^2143128238 is an apocalyptic number.

2143128238 is a deficient number, since it is larger than the sum of its proper divisors (1098167762).

2143128238 is a wasteful number, since it uses less digits than its factorization.

2143128238 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14151.

The product of its digits is 18432, while the sum is 34.

The square root of 2143128238 is about 46293.9330582313. The cubic root of 2143128238 is about 1289.2863544682.

The spelling of 2143128238 in words is "two billion, one hundred forty-three million, one hundred twenty-eight thousand, two hundred thirty-eight".