1442143 has 2 divisors, whose sum is σ = 1442144. Its totient is φ = 1442142.

The previous prime is 1442087. The next prime is 1442159. The reversal of 1442143 is 3412441.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1442143 is a prime.

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 1442143.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1442173) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 721071 + 721072.

It is an arithmetic number, because the mean of its divisors is an integer number (721072).

2^1442143 is an apocalyptic number.

1442143 is a deficient number, since it is larger than the sum of its proper divisors (1).

1442143 is an equidigital number, since it uses as much as digits as its factorization.

1442143 is an evil number, because the sum of its binary digits is even.

The product of its digits is 384, while the sum is 19.

The square root of 1442143 is about 1200.8925847052. The cubic root of 1442143 is about 112.9803134838.

Adding to 1442143 its reverse (3412441), we get a palindrome (4854584).

The spelling of 1442143 in words is "one million, four hundred forty-two thousand, one hundred forty-three".