1442143211 has 4 divisors (see below), whose sum is σ = 1443543024. Its totient is φ = 1440743400.

The previous prime is 1442143193. The next prime is 1442143231. The reversal of 1442143211 is 1123412441.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1123412441 = 31 ⋅36239111.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1442143211 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1442143231) 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, 698360 + ... + 700421.

It is an arithmetic number, because the mean of its divisors is an integer number (360885756).

Almost surely, 2^1442143211 is an apocalyptic number.

1442143211 is a deficient number, since it is larger than the sum of its proper divisors (1399813).

1442143211 is a wasteful number, since it uses less digits than its factorization.

1442143211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1399812.

The product of its digits is 768, while the sum is 23.

The square root of 1442143211 is about 37975.5607068546. The cubic root of 1442143211 is about 1129.8031899388.

Adding to 1442143211 its reverse (1123412441), we get a palindrome (2565555652).

The spelling of 1442143211 in words is "one billion, four hundred forty-two million, one hundred forty-three thousand, two hundred eleven".