142243122 has 16 divisors (see below), whose sum is σ = 325127232. Its totient is φ = 40640880.

The previous prime is 142243117. The next prime is 142243141. The reversal of 142243122 is 221342241.

142243122 is digitally balanced in base 2, 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 (21).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1693329 + ... + 1693412.

It is an arithmetic number, because the mean of its divisors is an integer number (20320452).

Almost surely, 2^142243122 is an apocalyptic number.

142243122 is an abundant number, since it is smaller than the sum of its proper divisors (182884110).

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

142243122 is a wasteful number, since it uses less digits than its factorization.

142243122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3386753.

The product of its digits is 768, while the sum is 21.

The square root of 142243122 is about 11926.5720976314. The cubic root of 142243122 is about 522.0079196109.

Adding to 142243122 its reverse (221342241), we get a palindrome (363585363).

It can be divided in two parts, 1422 and 43122, that added together give a palindrome (44544).

The spelling of 142243122 in words is "one hundred forty-two million, two hundred forty-three thousand, one hundred twenty-two".