143437873 has 2 divisors, whose sum is σ = 143437874. Its totient is φ = 143437872.

The previous prime is 143437871. The next prime is 143437883. The reversal of 143437873 is 378734341.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 99042304 + 44395569 = 9952^2 + 6663^2 .

It is an emirp because it is prime and its reverse (378734341) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 143437873 - 2¹ = 143437871 is a prime.

Together with 143437871, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (143437871) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71718936 + 71718937.

It is an arithmetic number, because the mean of its divisors is an integer number (71718937).

Almost surely, 2^143437873 is an apocalyptic number.

It is an amenable number.

143437873 is a deficient number, since it is larger than the sum of its proper divisors (1).

143437873 is an equidigital number, since it uses as much as digits as its factorization.

143437873 is an evil number, because the sum of its binary digits is even.

The product of its digits is 169344, while the sum is 40.

The square root of 143437873 is about 11976.5551391041. Note that the first 3 decimals coincide. The cubic root of 143437873 is about 523.4653572634.

The spelling of 143437873 in words is "one hundred forty-three million, four hundred thirty-seven thousand, eight hundred seventy-three".