143404423 has 2 divisors, whose sum is σ = 143404424. Its totient is φ = 143404422.

The previous prime is 143404411. The next prime is 143404447. The reversal of 143404423 is 324404341.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-143404423 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (143404453) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71702211 + 71702212.

It is an arithmetic number, because the mean of its divisors is an integer number (71702212).

Almost surely, 2^143404423 is an apocalyptic number.

143404423 is a deficient number, since it is larger than the sum of its proper divisors (1).

143404423 is an equidigital number, since it uses as much as digits as its factorization.

143404423 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4608, while the sum is 25.

The square root of 143404423 is about 11975.1585793258. The cubic root of 143404423 is about 523.4246630424.

Adding to 143404423 its reverse (324404341), we get a palindrome (467808764).

The spelling of 143404423 in words is "one hundred forty-three million, four hundred four thousand, four hundred twenty-three".