2001142000 has 160 divisors (see below), whose sum is σ = 5685511104. Its totient is φ = 671616000.

The previous prime is 2001141971. The next prime is 2001142007. The reversal of 2001142000 is 2411002.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2001142007) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 282502 + ... + 289498.

Almost surely, 2^2001142000 is an apocalyptic number.

2001142000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2001142000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2842755552).

2001142000 is an abundant number, since it is smaller than the sum of its proper divisors (3684369104).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2001142000 is a wasteful number, since it uses less digits than its factorization.

2001142000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7044 (or 7028 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 10.

The square root of 2001142000 is about 44734.1256760429. The cubic root of 2001142000 is about 1260.1608092396.

Adding to 2001142000 its reverse (2411002), we get a palindrome (2003553002).

The spelling of 2001142000 in words is "two billion, one million, one hundred forty-two thousand".