2125643 has 8 divisors (see below), whose sum is σ = 2311008. Its totient is φ = 1943424.

The previous prime is 2125621. The next prime is 2125649. The reversal of 2125643 is 3465212.

2125643 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2125643 - 2⁶ = 2125579 is a prime.

It is a d-powerful number, because it can be written as 2 + 1 + 2²¹ + 5 + 6⁵ + 4⁵ + 3⁹ .

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2125649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 746 + ... + 2192.

It is an arithmetic number, because the mean of its divisors is an integer number (288876).

2^2125643 is an apocalyptic number.

2125643 is a deficient number, since it is larger than the sum of its proper divisors (185365).

2125643 is a wasteful number, since it uses less digits than its factorization.

2125643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1573.

The product of its digits is 1440, while the sum is 23.

The square root of 2125643 is about 1457.9585042106. The cubic root of 2125643 is about 128.5770455512.

The spelling of 2125643 in words is "two million, one hundred twenty-five thousand, six hundred forty-three".