142222012 has 12 divisors (see below), whose sum is σ = 249030936. Its totient is φ = 71070320.

The previous prime is 142222009. The next prime is 142222021. The reversal of 142222012 is 210222241.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 1483 + ... + 16930.

It is an arithmetic number, because the mean of its divisors is an integer number (20752578).

Almost surely, 2^142222012 is an apocalyptic number.

It is an amenable number.

142222012 is a deficient number, since it is larger than the sum of its proper divisors (106808924).

142222012 is a wasteful number, since it uses less digits than its factorization.

142222012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20348 (or 20346 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 16.

The square root of 142222012 is about 11925.6870661610. The cubic root of 142222012 is about 521.9820949707.

Adding to 142222012 its reverse (210222241), we get a palindrome (352444253).

The spelling of 142222012 in words is "one hundred forty-two million, two hundred twenty-two thousand, twelve".