143112421 has 2 divisors, whose sum is σ = 143112422. Its totient is φ = 143112420.

The previous prime is 143112407. The next prime is 143112433. The reversal of 143112421 is 124211341.

143112421 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 120692196 + 22420225 = 10986^2 + 4735^2 .

It is a cyclic number.

It is not a de Polignac number, because 143112421 - 2¹⁵ = 143079653 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (143112401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71556210 + 71556211.

It is an arithmetic number, because the mean of its divisors is an integer number (71556211).

Almost surely, 2^143112421 is an apocalyptic number.

It is an amenable number.

143112421 is a deficient number, since it is larger than the sum of its proper divisors (1).

143112421 is an equidigital number, since it uses as much as digits as its factorization.

143112421 is an evil number, because the sum of its binary digits is even.

The product of its digits is 192, while the sum is 19.

The square root of 143112421 is about 11962.9603777660. The cubic root of 143112421 is about 523.0691535405.

Adding to 143112421 its reverse (124211341), we get a palindrome (267323762).

The spelling of 143112421 in words is "one hundred forty-three million, one hundred twelve thousand, four hundred twenty-one".