143438 has 4 divisors (see below), whose sum is σ = 215160. Its totient is φ = 71718.

The previous prime is 143419. The next prime is 143443. The reversal of 143438 is 834341.

It is a semiprime because it is the product of two primes.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35858 + ... + 35861.

It is an arithmetic number, because the mean of its divisors is an integer number (53790).

2¹⁴³⁴³⁸ is an apocalyptic number.

143438 is a deficient number, since it is larger than the sum of its proper divisors (71722).

143438 is an equidigital number, since it uses as much as digits as its factorization.

143438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71721.

The product of its digits is 1152, while the sum is 23.

The square root of 143438 is about 378.7320952864. The cubic root of 143438 is about 52.3465511756.

Adding to 143438 its reverse (834341), we get a palindrome (977779).

The spelling of 143438 in words is "one hundred forty-three thousand, four hundred thirty-eight".