445421143 has 2 divisors, whose sum is σ = 445421144. Its totient is φ = 445421142.

The previous prime is 445421101. The next prime is 445421147. The reversal of 445421143 is 341124544.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 445421143 - 2⁹ = 445420631 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (445421147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 222710571 + 222710572.

It is an arithmetic number, because the mean of its divisors is an integer number (222710572).

Almost surely, 2^445421143 is an apocalyptic number.

445421143 is a deficient number, since it is larger than the sum of its proper divisors (1).

445421143 is an equidigital number, since it uses as much as digits as its factorization.

445421143 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7680, while the sum is 28.

The square root of 445421143 is about 21105.0027955459. The cubic root of 445421143 is about 763.7014397459.

Adding to 445421143 its reverse (341124544), we get a palindrome (786545687).

The spelling of 445421143 in words is "four hundred forty-five million, four hundred twenty-one thousand, one hundred forty-three".