252438143 has 4 divisors (see below), whose sum is σ = 253201128. Its totient is φ = 251675160.

The previous prime is 252438119. The next prime is 252438149. The reversal of 252438143 is 341834252.

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 252438143 - 2²² = 248243839 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 (252438149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 380996 + ... + 381657.

It is an arithmetic number, because the mean of its divisors is an integer number (63300282).

Almost surely, 2^252438143 is an apocalyptic number.

252438143 is a deficient number, since it is larger than the sum of its proper divisors (762985).

252438143 is an equidigital number, since it uses as much as digits as its factorization.

252438143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 762984.

The product of its digits is 23040, while the sum is 32.

The square root of 252438143 is about 15888.3020804616. The cubic root of 252438143 is about 632.0018151086.

The spelling of 252438143 in words is "two hundred fifty-two million, four hundred thirty-eight thousand, one hundred forty-three".