202440143 has 2 divisors, whose sum is σ = 202440144. Its totient is φ = 202440142.

The previous prime is 202440103. The next prime is 202440149. The reversal of 202440143 is 341044202.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 202440143 - 2¹⁶ = 202374607 is a prime.

It is a super-2 number, since 2×202440143² = 81964022995720898, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (202440149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101220071 + 101220072.

It is an arithmetic number, because the mean of its divisors is an integer number (101220072).

Almost surely, 2^202440143 is an apocalyptic number.

202440143 is a deficient number, since it is larger than the sum of its proper divisors (1).

202440143 is an equidigital number, since it uses as much as digits as its factorization.

202440143 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 202440143 is about 14228.1461547174. The cubic root of 202440143 is about 587.1722806630.

Adding to 202440143 its reverse (341044202), we get a palindrome (543484345).

The spelling of 202440143 in words is "two hundred two million, four hundred forty thousand, one hundred forty-three".