2125894 has 4 divisors (see below), whose sum is σ = 3188844. Its totient is φ = 1062946.

The previous prime is 2125889. The next prime is 2125919. The reversal of 2125894 is 4985212.

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

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an Ulam number.

It is an alternating number because its digits alternate between even and odd.

It is a congruent 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 as a sum of consecutive naturals, namely, 531472 + ... + 531475.

It is an arithmetic number, because the mean of its divisors is an integer number (797211).

2^2125894 is an apocalyptic number.

2125894 is a deficient number, since it is larger than the sum of its proper divisors (1062950).

2125894 is a wasteful number, since it uses less digits than its factorization.

2125894 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1062949.

The product of its digits is 5760, while the sum is 31.

The square root of 2125894 is about 1458.0445809371. The cubic root of 2125894 is about 128.5821062267.

The spelling of 2125894 in words is "two million, one hundred twenty-five thousand, eight hundred ninety-four".