2000021243 has 8 divisors (see below), whose sum is σ = 2184247296. Its totient is φ = 1816196200.

The previous prime is 2000021227. The next prime is 2000021249. The reversal of 2000021243 is 3421200002.

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 2000021243 - 2⁴ = 2000021227 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2000021249) 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, 89771 + ... + 109812.

It is an arithmetic number, because the mean of its divisors is an integer number (273030912).

Almost surely, 2^2000021243 is an apocalyptic number.

2000021243 is a deficient number, since it is larger than the sum of its proper divisors (184226053).

2000021243 is a wasteful number, since it uses less digits than its factorization.

2000021243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 200505.

The product of its (nonzero) digits is 96, while the sum is 14.

The square root of 2000021243 is about 44721.5970533254. The cubic root of 2000021243 is about 1259.9255106296.

Adding to 2000021243 its reverse (3421200002), we get a palindrome (5421221245).

The spelling of 2000021243 in words is "two billion, twenty-one thousand, two hundred forty-three".