2001142239 has 8 divisors (see below), whose sum is σ = 2668463232. Its totient is φ = 1333958040.

The previous prime is 2001142237. The next prime is 2001142259. The reversal of 2001142239 is 9322411002.

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

It is not a de Polignac number, because 2001142239 - 2¹ = 2001142237 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2001142237) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7044 + ... + 63654.

It is an arithmetic number, because the mean of its divisors is an integer number (333557904).

Almost surely, 2^2001142239 is an apocalyptic number.

2001142239 is a deficient number, since it is larger than the sum of its proper divisors (667320993).

2001142239 is a wasteful number, since it uses less digits than its factorization.

2001142239 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68397.

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 2001142239 is about 44734.1283473815. The cubic root of 2001142239 is about 1260.1608594074.

The spelling of 2001142239 in words is "two billion, one million, one hundred forty-two thousand, two hundred thirty-nine".