222222142 has 16 divisors (see below), whose sum is σ = 338370480. Its totient is φ = 109441728.

The previous prime is 222222139. The next prime is 222222149. The reversal of 222222142 is 241222222.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222222149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 47053 + ... + 51559.

It is an arithmetic number, because the mean of its divisors is an integer number (21148155).

Almost surely, 2^222222142 is an apocalyptic number.

222222142 is a deficient number, since it is larger than the sum of its proper divisors (116148338).

222222142 is a wasteful number, since it uses less digits than its factorization.

222222142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4875.

The product of its digits is 512, while the sum is 19.

The square root of 222222142 is about 14907.1171592632. The cubic root of 222222142 is about 605.7067913906.

Adding to 222222142 its reverse (241222222), we get a palindrome (463444364).

The spelling of 222222142 in words is "two hundred twenty-two million, two hundred twenty-two thousand, one hundred forty-two".