143122249 has 2 divisors, whose sum is σ = 143122250. Its totient is φ = 143122248.

The previous prime is 143122229. The next prime is 143122271. The reversal of 143122249 is 942221341.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 141776649 + 1345600 = 11907^2 + 1160^2 .

It is an emirp because it is prime and its reverse (942221341) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 143122249 - 2¹⁵ = 143089481 is a prime.

It is not a weakly prime, because it can be changed into another prime (143122229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71561124 + 71561125.

It is an arithmetic number, because the mean of its divisors is an integer number (71561125).

Almost surely, 2^143122249 is an apocalyptic number.

It is an amenable number.

143122249 is a deficient number, since it is larger than the sum of its proper divisors (1).

143122249 is an equidigital number, since it uses as much as digits as its factorization.

143122249 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3456, while the sum is 28.

The square root of 143122249 is about 11963.3711386047. The cubic root of 143122249 is about 523.0811268921.

It can be divided in two parts, 14312 and 2249, that added together give a palindrome (16561).

The spelling of 143122249 in words is "one hundred forty-three million, one hundred twenty-two thousand, two hundred forty-nine".