143145889 has 2 divisors, whose sum is σ = 143145890. Its totient is φ = 143145888.

The previous prime is 143145853. The next prime is 143145911. The reversal of 143145889 is 988541341.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 135489600 + 7656289 = 11640^2 + 2767^2 .

It is a cyclic number.

It is not a de Polignac number, because 143145889 - 2¹¹ = 143143841 is a prime.

It is not a weakly prime, because it can be changed into another prime (143145809) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71572944 + 71572945.

It is an arithmetic number, because the mean of its divisors is an integer number (71572945).

Almost surely, 2^143145889 is an apocalyptic number.

It is an amenable number.

143145889 is a deficient number, since it is larger than the sum of its proper divisors (1).

143145889 is an equidigital number, since it uses as much as digits as its factorization.

143145889 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 138240, while the sum is 43.

The square root of 143145889 is about 11964.3591136341. The cubic root of 143145889 is about 523.1099250167.

The spelling of 143145889 in words is "one hundred forty-three million, one hundred forty-five thousand, eight hundred eighty-nine".