143211442 has 16 divisors (see below), whose sum is σ = 240063264. Its totient is φ = 63508000.

The previous prime is 143211421. The next prime is 143211463. The reversal of 143211442 is 244112341.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (143211421) and next prime (143211463).

It is a Harshad number since it is a multiple of its sum of digits (22).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 78484 + ... + 80287.

It is an arithmetic number, because the mean of its divisors is an integer number (15003954).

Almost surely, 2^143211442 is an apocalyptic number.

143211442 is a deficient number, since it is larger than the sum of its proper divisors (96851822).

143211442 is a wasteful number, since it uses less digits than its factorization.

143211442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158825.

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

The square root of 143211442 is about 11967.0983116209. The cubic root of 143211442 is about 523.1897647567.

Adding to 143211442 its reverse (244112341), we get a palindrome (387323783).

The spelling of 143211442 in words is "one hundred forty-three million, two hundred eleven thousand, four hundred forty-two".