143399241 has 20 divisors (see below), whose sum is σ = 215419204. Its totient is φ = 95061600.

The previous prime is 143399237. The next prime is 143399257. The reversal of 143399241 is 142993341.

It can be written as a sum of positive squares in 2 ways, for example, as 22838841 + 120560400 = 4779^2 + 10980^2 .

It is not a de Polignac number, because 143399241 - 2² = 143399237 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 143399196 and 143399205.

It is not an unprimeable number, because it can be changed into a prime (143399231) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 9771 + ... + 19551.

Almost surely, 2^143399241 is an apocalyptic number.

It is an amenable number.

143399241 is a deficient number, since it is larger than the sum of its proper divisors (72019963).

143399241 is an equidigital number, since it uses as much as digits as its factorization.

143399241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9974 (or 9965 counting only the distinct ones).

The product of its digits is 23328, while the sum is 36.

The square root of 143399241 is about 11974.9422128042. The cubic root of 143399241 is about 523.4183582177.

The spelling of 143399241 in words is "one hundred forty-three million, three hundred ninety-nine thousand, two hundred forty-one".