143104421 has 2 divisors, whose sum is σ = 143104422. Its totient is φ = 143104420.

The previous prime is 143104417. The next prime is 143104427. The reversal of 143104421 is 124401341.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 122899396 + 20205025 = 11086^2 + 4495^2 .

It is a cyclic number.

It is not a de Polignac number, because 143104421 - 2² = 143104417 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 143104393 and 143104402.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (143104427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71552210 + 71552211.

It is an arithmetic number, because the mean of its divisors is an integer number (71552211).

Almost surely, 2^143104421 is an apocalyptic number.

It is an amenable number.

143104421 is a deficient number, since it is larger than the sum of its proper divisors (1).

143104421 is an equidigital number, since it uses as much as digits as its factorization.

143104421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 143104421 is about 11962.6260076958. The cubic root of 143104421 is about 523.0594068180.

Adding to 143104421 its reverse (124401341), we get a palindrome (267505762).

The spelling of 143104421 in words is "one hundred forty-three million, one hundred four thousand, four hundred twenty-one".