2125866 has 16 divisors (see below), whose sum is σ = 4284000. Its totient is φ = 703248.

The previous prime is 2125847. The next prime is 2125873. The reversal of 2125866 is 6685212.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 441 + ... + 2108.

It is an arithmetic number, because the mean of its divisors is an integer number (267750).

2^2125866 is an apocalyptic number.

2125866 is an abundant number, since it is smaller than the sum of its proper divisors (2158134).

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

2125866 is a wasteful number, since it uses less digits than its factorization.

2125866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2693.

The product of its digits is 5760, while the sum is 30.

The square root of 2125866 is about 1458.0349790043. The cubic root of 2125866 is about 128.5815417089.

The spelling of 2125866 in words is "two million, one hundred twenty-five thousand, eight hundred sixty-six".