1440000143 has 2 divisors, whose sum is σ = 1440000144. Its totient is φ = 1440000142.

The previous prime is 1440000137. The next prime is 1440000157. The reversal of 1440000143 is 3410000441.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1440000143 - 2⁸ = 1439999887 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1440000103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 720000071 + 720000072.

It is an arithmetic number, because the mean of its divisors is an integer number (720000072).

Almost surely, 2^1440000143 is an apocalyptic number.

1440000143 is a deficient number, since it is larger than the sum of its proper divisors (1).

1440000143 is an equidigital number, since it uses as much as digits as its factorization.

1440000143 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 1440000143 is about 37947.3338062109. Note that the first 3 decimals coincide. The cubic root of 1440000143 is about 1129.2432720373.

Adding to 1440000143 its reverse (3410000441), we get a palindrome (4850000584).

The spelling of 1440000143 in words is "one billion, four hundred forty million, one hundred forty-three", and thus it is an aban number.