2100128 has 12 divisors (see below), whose sum is σ = 4134690. Its totient is φ = 1050048.

The previous prime is 2100121. The next prime is 2100167. The reversal of 2100128 is 8210012.

It can be written as a sum of positive squares in only one way, i.e., 1817104 + 283024 = 1348^2 + 532^2 .

It is not an unprimeable number, because it can be changed into a prime (2100121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32783 + ... + 32846.

2^2100128 is an apocalyptic number.

It is an amenable number.

2100128 is a deficient number, since it is larger than the sum of its proper divisors (2034562).

2100128 is an equidigital number, since it uses as much as digits as its factorization.

2100128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65639 (or 65631 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

The square root of 2100128 is about 1449.1818381418. The cubic root of 2100128 is about 128.0605182575.

The spelling of 2100128 in words is "two million, one hundred thousand, one hundred twenty-eight".