2125787 has 4 divisors (see below), whose sum is σ = 2199120. Its totient is φ = 2052456.

The previous prime is 2125771. The next prime is 2125793. The reversal of 2125787 is 7875212.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2125787 - 2⁴ = 2125771 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2125757) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36623 + ... + 36680.

It is an arithmetic number, because the mean of its divisors is an integer number (549780).

2^2125787 is an apocalyptic number.

2125787 is a deficient number, since it is larger than the sum of its proper divisors (73333).

2125787 is an equidigital number, since it uses as much as digits as its factorization.

2125787 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73332.

The product of its digits is 7840, while the sum is 32.

The square root of 2125787 is about 1458.0078874958. The cubic root of 2125787 is about 128.5799489356.

The spelling of 2125787 in words is "two million, one hundred twenty-five thousand, seven hundred eighty-seven".