1201440143 has 2 divisors, whose sum is σ = 1201440144. Its totient is φ = 1201440142.

The previous prime is 1201440139. The next prime is 1201440151. The reversal of 1201440143 is 3410441021.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1201440143 - 2² = 1201440139 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1201440113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 600720071 + 600720072.

It is an arithmetic number, because the mean of its divisors is an integer number (600720072).

Almost surely, 2^1201440143 is an apocalyptic number.

1201440143 is a deficient number, since it is larger than the sum of its proper divisors (1).

1201440143 is an equidigital number, since it uses as much as digits as its factorization.

1201440143 is an evil number, because the sum of its binary digits is even.

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

The square root of 1201440143 is about 34661.7965922137. The cubic root of 1201440143 is about 1063.0835048756.

Adding to 1201440143 its reverse (3410441021), we get a palindrome (4611881164).

The spelling of 1201440143 in words is "one billion, two hundred one million, four hundred forty thousand, one hundred forty-three".