2011442143 has 4 divisors (see below), whose sum is σ = 2012139360. Its totient is φ = 2010744928.

The previous prime is 2011442123. The next prime is 2011442171. The reversal of 2011442143 is 3412441102.

It is a happy number.

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 2011442143 - 2¹³ = 2011433951 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2011442123) 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, 344263 + ... + 350056.

It is an arithmetic number, because the mean of its divisors is an integer number (503034840).

Almost surely, 2^2011442143 is an apocalyptic number.

2011442143 is a deficient number, since it is larger than the sum of its proper divisors (697217).

2011442143 is an equidigital number, since it uses as much as digits as its factorization.

2011442143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 697216.

The product of its (nonzero) digits is 768, while the sum is 22.

The square root of 2011442143 is about 44849.1041493584. The cubic root of 2011442143 is about 1262.3191818680.

Adding to 2011442143 its reverse (3412441102), we get a palindrome (5423883245).

The spelling of 2011442143 in words is "two billion, eleven million, four hundred forty-two thousand, one hundred forty-three".