2002043123 has 4 divisors (see below), whose sum is σ = 2009431008. Its totient is φ = 1994655240.

The previous prime is 2002043111. The next prime is 2002043143. The reversal of 2002043123 is 3213402002.

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 2002043123 - 2⁶ = 2002043059 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2002043143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3693536 + ... + 3694077.

It is an arithmetic number, because the mean of its divisors is an integer number (502357752).

Almost surely, 2^2002043123 is an apocalyptic number.

2002043123 is a deficient number, since it is larger than the sum of its proper divisors (7387885).

2002043123 is an equidigital number, since it uses as much as digits as its factorization.

2002043123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7387884.

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 2002043123 is about 44744.1965287120. The cubic root of 2002043123 is about 1260.3499328304.

Adding to 2002043123 its reverse (3213402002), we get a palindrome (5215445125).

The spelling of 2002043123 in words is "two billion, two million, forty-three thousand, one hundred twenty-three".