2001029123 has 8 divisors (see below), whose sum is σ = 2048181168. Its totient is φ = 1953905184.

The previous prime is 2001029113. The next prime is 2001029159. The reversal of 2001029123 is 3219201002.

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 2001029123 - 2¹⁸ = 2000766979 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2001029095 and 2001029104.

It is not an unprimeable number, because it can be changed into a prime (2001029113) 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 7 ways as a sum of consecutive naturals, for example, 228461 + ... + 237057.

It is an arithmetic number, because the mean of its divisors is an integer number (256022646).

Almost surely, 2^2001029123 is an apocalyptic number.

2001029123 is a deficient number, since it is larger than the sum of its proper divisors (47152045).

2001029123 is an equidigital number, since it uses as much as digits as its factorization.

2001029123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14053.

The product of its (nonzero) digits is 216, while the sum is 20.

The square root of 2001029123 is about 44732.8640151735. The cubic root of 2001029123 is about 1260.1371151279.

The spelling of 2001029123 in words is "two billion, one million, twenty-nine thousand, one hundred twenty-three".