143149 has 4 divisors (see below), whose sum is σ = 143964. Its totient is φ = 142336.

The previous prime is 143141. The next prime is 143159. The reversal of 143149 is 941341.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 941341 = 17 ⋅55373.

It can be written as a sum of positive squares in 2 ways, for example, as 84100 + 59049 = 290^2 + 243^2 .

It is a cyclic number.

It is not a de Polignac number, because 143149 - 2³ = 143141 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 (143141) 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, 22 + ... + 535.

It is an arithmetic number, because the mean of its divisors is an integer number (35991).

2¹⁴³¹⁴⁹ is an apocalyptic number.

It is an amenable number.

143149 is a deficient number, since it is larger than the sum of its proper divisors (815).

143149 is an equidigital number, since it uses as much as digits as its factorization.

143149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 814.

The product of its digits is 432, while the sum is 22.

The square root of 143149 is about 378.3503667238. The cubic root of 143149 is about 52.3113714585.

It can be divided in two parts, 143 and 149, that added together give a palindrome (292).

The spelling of 143149 in words is "one hundred forty-three thousand, one hundred forty-nine".