200021139 has 24 divisors (see below), whose sum is σ = 292546800. Its totient is φ = 131685120.

The previous prime is 200021123. The next prime is 200021153. The reversal of 200021139 is 931120002.

It is a happy number.

200021139 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 200021139 - 2⁴ = 200021123 is a prime.

It is not an unprimeable number, because it can be changed into a prime (200021539) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 351247 + ... + 351815.

It is an arithmetic number, because the mean of its divisors is an integer number (12189450).

Almost surely, 2^200021139 is an apocalyptic number.

200021139 is a deficient number, since it is larger than the sum of its proper divisors (92525661).

200021139 is a wasteful number, since it uses less digits than its factorization.

200021139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 995 (or 992 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

The square root of 200021139 is about 14142.8829804959. The cubic root of 200021139 is about 584.8241505204.

The spelling of 200021139 in words is "two hundred million, twenty-one thousand, one hundred thirty-nine".