2129743 has 16 divisors (see below), whose sum is σ = 2813184. Its totient is φ = 1560960.

The previous prime is 2129741. The next prime is 2129749. The reversal of 2129743 is 3479212.

It is a cyclic number.

It is not a de Polignac number, because 2129743 - 2¹ = 2129741 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2129741) 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 15 ways as a sum of consecutive naturals, for example, 496 + ... + 2122.

It is an arithmetic number, because the mean of its divisors is an integer number (175824).

2^2129743 is an apocalyptic number.

2129743 is a deficient number, since it is larger than the sum of its proper divisors (683441).

2129743 is a wasteful number, since it uses less digits than its factorization.

2129743 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1662.

The product of its digits is 3024, while the sum is 28.

The square root of 2129743 is about 1459.3639025274. The cubic root of 2129743 is about 128.6596601314.

The spelling of 2129743 in words is "two million, one hundred twenty-nine thousand, seven hundred forty-three".