2001239146 has 8 divisors (see below), whose sum is σ = 3002356224. Its totient is φ = 1000453740.

The previous prime is 2001239143. The next prime is 2001239159. The reversal of 2001239146 is 6419321002.

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

It is not an unprimeable number, because it can be changed into a prime (2001239143) 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, 67240 + ... + 92323.

It is an arithmetic number, because the mean of its divisors is an integer number (375294528).

Almost surely, 2^2001239146 is an apocalyptic number.

2001239146 is a deficient number, since it is larger than the sum of its proper divisors (1001117078).

2001239146 is a wasteful number, since it uses less digits than its factorization.

2001239146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 165836.

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 2001239146 is about 44735.2114782081. The cubic root of 2001239146 is about 1260.1812005297.

The spelling of 2001239146 in words is "two billion, one million, two hundred thirty-nine thousand, one hundred forty-six".