142223111 has 8 divisors (see below), whose sum is σ = 145084800. Its totient is φ = 139383288.

The previous prime is 142223093. The next prime is 142223141. The reversal of 142223111 is 111322241.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-142223111 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 142223111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142223141) by changing a digit.

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, 8000 + ... + 18666.

It is an arithmetic number, because the mean of its divisors is an integer number (18135600).

Almost surely, 2^142223111 is an apocalyptic number.

142223111 is a deficient number, since it is larger than the sum of its proper divisors (2861689).

142223111 is a wasteful number, since it uses less digits than its factorization.

142223111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10933.

The product of its digits is 96, while the sum is 17.

The square root of 142223111 is about 11925.7331430818. The cubic root of 142223111 is about 521.9834394809.

Adding to 142223111 its reverse (111322241), we get a palindrome (253545352).

The spelling of 142223111 in words is "one hundred forty-two million, two hundred twenty-three thousand, one hundred eleven".