143440105 has 4 divisors (see below), whose sum is σ = 172128132. Its totient is φ = 114752080.

The previous prime is 143440091. The next prime is 143440117. The reversal of 143440105 is 501044341.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 94887081 + 48553024 = 9741^2 + 6968^2 .

It is not a de Polignac number, because 143440105 - 2⁷ = 143439977 is a prime.

It is a super-2 number, since 2×143440105² = 41150127444822050, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 14344006 + ... + 14344015.

It is an arithmetic number, because the mean of its divisors is an integer number (43032033).

Almost surely, 2^143440105 is an apocalyptic number.

It is an amenable number.

143440105 is a deficient number, since it is larger than the sum of its proper divisors (28688027).

143440105 is an equidigital number, since it uses as much as digits as its factorization.

143440105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28688026.

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 143440105 is about 11976.6483207949. The cubic root of 143440105 is about 523.4680724194.

Adding to 143440105 its reverse (501044341), we get a palindrome (644484446).

The spelling of 143440105 in words is "one hundred forty-three million, four hundred forty thousand, one hundred five".