142222111 has 4 divisors (see below), whose sum is σ = 142305912. Its totient is φ = 142138312.

The previous prime is 142222103. The next prime is 142222121. The reversal of 142222111 is 111222241.

142222111 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 142222111 - 2³ = 142222103 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142222121) 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, 39301 + ... + 42766.

It is an arithmetic number, because the mean of its divisors is an integer number (35576478).

Almost surely, 2^142222111 is an apocalyptic number.

142222111 is a deficient number, since it is larger than the sum of its proper divisors (83801).

142222111 is an equidigital number, since it uses as much as digits as its factorization.

142222111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83800.

The product of its digits is 64, while the sum is 16.

The square root of 142222111 is about 11925.6912168645. The cubic root of 142222111 is about 521.9822160870.

Adding to 142222111 its reverse (111222241), we get a palindrome (253444352).

The spelling of 142222111 in words is "one hundred forty-two million, two hundred twenty-two thousand, one hundred eleven".