200421079 has 4 divisors (see below), whose sum is σ = 205309440. Its totient is φ = 195532720.

The previous prime is 200421071. The next prime is 200421127. The reversal of 200421079 is 970124002.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 200421079 - 2³ = 200421071 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (200421071) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2444119 + ... + 2444200.

It is an arithmetic number, because the mean of its divisors is an integer number (51327360).

Almost surely, 2^200421079 is an apocalyptic number.

200421079 is a deficient number, since it is larger than the sum of its proper divisors (4888361).

200421079 is an equidigital number, since it uses as much as digits as its factorization.

200421079 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4888360.

The product of its (nonzero) digits is 1008, while the sum is 25.

The square root of 200421079 is about 14157.0151868252. The cubic root of 200421079 is about 585.2136741061.

The spelling of 200421079 in words is "two hundred million, four hundred twenty-one thousand, seventy-nine".