142211344 has 20 divisors (see below), whose sum is σ = 300583440. Its totient is φ = 64641440.

The previous prime is 142211327. The next prime is 142211351. The reversal of 142211344 is 443112241.

It is a happy number.

142211344 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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 3 ways as a sum of consecutive naturals, for example, 403834 + ... + 404185.

It is an arithmetic number, because the mean of its divisors is an integer number (15029172).

Almost surely, 2^142211344 is an apocalyptic number.

It is an amenable number.

142211344 is an abundant number, since it is smaller than the sum of its proper divisors (158372096).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

142211344 is a wasteful number, since it uses less digits than its factorization.

142211344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 808038 (or 808032 counting only the distinct ones).

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

The square root of 142211344 is about 11925.2397879456. The cubic root of 142211344 is about 521.9690434415.

Adding to 142211344 its reverse (443112241), we get a palindrome (585323585).

The spelling of 142211344 in words is "one hundred forty-two million, two hundred eleven thousand, three hundred forty-four".