143923 has 4 divisors (see below), whose sum is σ = 155008. Its totient is φ = 132840.

The previous prime is 143909. The next prime is 143947. The reversal of 143923 is 329341.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 329341 = 17 ⋅19373.

It is a cyclic number.

It is not a de Polignac number, because 143923 - 2¹³ = 135731 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 143894 and 143903.

It is not an unprimeable number, because it can be changed into a prime (143953) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5523 + ... + 5548.

It is an arithmetic number, because the mean of its divisors is an integer number (38752).

2¹⁴³⁹²³ is an apocalyptic number.

143923 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

143923 is a deficient number, since it is larger than the sum of its proper divisors (11085).

143923 is a wasteful number, since it uses less digits than its factorization.

143923 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11084.

The product of its digits is 648, while the sum is 22.

The square root of 143923 is about 379.3718492456. The cubic root of 143923 is about 52.4054837607.

The spelling of 143923 in words is "one hundred forty-three thousand, nine hundred twenty-three".