202400143 has 4 divisors (see below), whose sum is σ = 220800168. Its totient is φ = 184000120.

The previous prime is 202400137. The next prime is 202400153. The reversal of 202400143 is 341004202.

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 202400143 - 2⁵ = 202400111 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 (202400123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9199996 + ... + 9200017.

It is an arithmetic number, because the mean of its divisors is an integer number (55200042).

Almost surely, 2^202400143 is an apocalyptic number.

202400143 is a deficient number, since it is larger than the sum of its proper divisors (18400025).

202400143 is a wasteful number, since it uses less digits than its factorization.

202400143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18400024.

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

The square root of 202400143 is about 14226.7404207710. The cubic root of 202400143 is about 587.1336051349.

Adding to 202400143 its reverse (341004202), we get a palindrome (543404345).

The spelling of 202400143 in words is "two hundred two million, four hundred thousand, one hundred forty-three".