20043129 has 8 divisors (see below), whose sum is σ = 26748000. Its totient is φ = 13350176.

The previous prime is 20043083. The next prime is 20043151. The reversal of 20043129 is 92134002.

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 20043129 - 2¹¹ = 20041081 is a prime.

It is a super-2 number, since 2×20043129² = 803454040221282, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20047129) 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, 2269 + ... + 6725.

It is an arithmetic number, because the mean of its divisors is an integer number (3343500).

Almost surely, 2^20043129 is an apocalyptic number.

It is an amenable number.

20043129 is a deficient number, since it is larger than the sum of its proper divisors (6704871).

20043129 is a wasteful number, since it uses less digits than its factorization.

20043129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5959.

The product of its (nonzero) digits is 432, while the sum is 21.

The square root of 20043129 is about 4476.9553270052. The cubic root of 20043129 is about 271.6367384363.

The spelling of 20043129 in words is "twenty million, forty-three thousand, one hundred twenty-nine".