142223112 has 24 divisors (see below), whose sum is σ = 385187790. Its totient is φ = 47407680.

The previous prime is 142223093. The next prime is 142223141. The reversal of 142223112 is 211322241.

It is a happy number.

142223112 is a `hidden beast` number, since 1 + 422 + 231 + 12 = 666.

It can be written as a sum of positive squares in only one way, i.e., 74753316 + 67469796 = 8646^2 + 8214^2 .

It is a tau number, because it is divible by the number of its divisors (24).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 987589 + ... + 987732.

Almost surely, 2^142223112 is an apocalyptic number.

142223112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

142223112 is an abundant number, since it is smaller than the sum of its proper divisors (242964678).

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

142223112 is a wasteful number, since it uses less digits than its factorization.

142223112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1975333 (or 1975326 counting only the distinct ones).

The product of its digits is 192, while the sum is 18.

The square root of 142223112 is about 11925.7331850080. The cubic root of 142223112 is about 521.9834407043.

Adding to 142223112 its reverse (211322241), we get a palindrome (353545353).

The spelling of 142223112 in words is "one hundred forty-two million, two hundred twenty-three thousand, one hundred twelve".