2049123 has 4 divisors (see below), whose sum is σ = 2732168. Its totient is φ = 1366080.

The previous prime is 2049121. The next prime is 2049127. The reversal of 2049123 is 3219402.

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

It is not a de Polignac number, because 2049123 - 2¹ = 2049121 is a prime.

It is a D-number.

It is a Duffinian number.

2049123 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 2049123.

It is not an unprimeable number, because it can be changed into a prime (2049121) 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 3 ways as a sum of consecutive naturals, for example, 341518 + ... + 341523.

It is an arithmetic number, because the mean of its divisors is an integer number (683042).

2^2049123 is an apocalyptic number.

2049123 is a deficient number, since it is larger than the sum of its proper divisors (683045).

2049123 is an equidigital number, since it uses as much as digits as its factorization.

2049123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 683044.

The product of its (nonzero) digits is 432, while the sum is 21.

The square root of 2049123 is about 1431.4758118809. The cubic root of 2049123 is about 127.0152915227.

The spelling of 2049123 in words is "two million, forty-nine thousand, one hundred twenty-three".