142212212 has 6 divisors (see below), whose sum is σ = 248871378. Its totient is φ = 71106104.

The previous prime is 142212199. The next prime is 142212233. The reversal of 142212212 is 212212241.

142212212 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 85119076 + 57093136 = 9226^2 + 7556^2 .

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17776523 + ... + 17776530.

It is an arithmetic number, because the mean of its divisors is an integer number (41478563).

Almost surely, 2^142212212 is an apocalyptic number.

It is an amenable number.

142212212 is a deficient number, since it is larger than the sum of its proper divisors (106659166).

142212212 is a wasteful number, since it uses less digits than its factorization.

142212212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35553057 (or 35553055 counting only the distinct ones).

The product of its digits is 128, while the sum is 17.

The square root of 142212212 is about 11925.2761812882. The cubic root of 142212212 is about 521.9701054013.

Adding to 142212212 its reverse (212212241), we get a palindrome (354424453).

The spelling of 142212212 in words is "one hundred forty-two million, two hundred twelve thousand, two hundred twelve".