143449133 has 2 divisors, whose sum is σ = 143449134. Its totient is φ = 143449132.

The previous prime is 143449099. The next prime is 143449139. The reversal of 143449133 is 331944341.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 135536164 + 7912969 = 11642^2 + 2813^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-143449133 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 143449133.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (143449139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71724566 + 71724567.

It is an arithmetic number, because the mean of its divisors is an integer number (71724567).

Almost surely, 2^143449133 is an apocalyptic number.

It is an amenable number.

143449133 is a deficient number, since it is larger than the sum of its proper divisors (1).

143449133 is an equidigital number, since it uses as much as digits as its factorization.

143449133 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 15552, while the sum is 32.

The square root of 143449133 is about 11977.0252149689. The cubic root of 143449133 is about 523.4790544029.

The spelling of 143449133 in words is "one hundred forty-three million, four hundred forty-nine thousand, one hundred thirty-three".