200143240 has 64 divisors (see below), whose sum is σ = 512645760. Its totient is φ = 69611520.

The previous prime is 200143213. The next prime is 200143243. The reversal of 200143240 is 42341002.

It is not an unprimeable number, because it can be changed into a prime (200143243) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 232 + ... + 20008.

It is an arithmetic number, because the mean of its divisors is an integer number (8010090).

Almost surely, 2^200143240 is an apocalyptic number.

200143240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 200143240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (256322880).

200143240 is an abundant number, since it is smaller than the sum of its proper divisors (312502520).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

200143240 is a wasteful number, since it uses less digits than its factorization.

200143240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19822 (or 19818 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 200143240 is about 14147.1990160597. The cubic root of 200143240 is about 584.9431264260.

Adding to 200143240 its reverse (42341002), we get a palindrome (242484242).

The spelling of 200143240 in words is "two hundred million, one hundred forty-three thousand, two hundred forty".