200421442 has 16 divisors (see below), whose sum is σ = 330648192. Its totient is φ = 90533520.

The previous prime is 200421439. The next prime is 200421491. The reversal of 200421442 is 244124002.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 80784 + ... + 83227.

It is an arithmetic number, because the mean of its divisors is an integer number (20665512).

Almost surely, 2^200421442 is an apocalyptic number.

200421442 is a deficient number, since it is larger than the sum of its proper divisors (130226750).

200421442 is a wasteful number, since it uses less digits than its factorization.

200421442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 164073.

The product of its (nonzero) digits is 512, while the sum is 19.

The square root of 200421442 is about 14157.0280073185. The cubic root of 200421442 is about 585.2140274163.

Adding to 200421442 its reverse (244124002), we get a palindrome (444545444).

The spelling of 200421442 in words is "two hundred million, four hundred twenty-one thousand, four hundred forty-two".