1200143143 has 4 divisors (see below), whose sum is σ = 1200313800. Its totient is φ = 1199972488.

The previous prime is 1200143129. The next prime is 1200143149. The reversal of 1200143143 is 3413410021.

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

It is a cyclic number.

It is not a de Polignac number, because 1200143143 - 2⁵ = 1200143111 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1200143143.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1200143149) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 74305 + ... + 89002.

It is an arithmetic number, because the mean of its divisors is an integer number (300078450).

Almost surely, 2^1200143143 is an apocalyptic number.

1200143143 is a deficient number, since it is larger than the sum of its proper divisors (170657).

1200143143 is an equidigital number, since it uses as much as digits as its factorization.

1200143143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 170656.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 1200143143 is about 34643.0821810069. The cubic root of 1200143143 is about 1062.7008208736.

Adding to 1200143143 its reverse (3413410021), we get a palindrome (4613553164).

The spelling of 1200143143 in words is "one billion, two hundred million, one hundred forty-three thousand, one hundred forty-three".