142221116 has 12 divisors (see below), whose sum is σ = 263527488. Its totient is φ = 66927552.

The previous prime is 142221097. The next prime is 142221139. The reversal of 142221116 is 611122241.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1045676 + ... + 1045811.

It is an arithmetic number, because the mean of its divisors is an integer number (21960624).

Almost surely, 2^142221116 is an apocalyptic number.

It is an amenable number.

142221116 is a deficient number, since it is larger than the sum of its proper divisors (121306372).

142221116 is a wasteful number, since it uses less digits than its factorization.

142221116 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2091508 (or 2091506 counting only the distinct ones).

The product of its digits is 192, while the sum is 20.

The square root of 142221116 is about 11925.6495001321. The cubic root of 142221116 is about 521.9809988043.

Adding to 142221116 its reverse (611122241), we get a palindrome (753343357).

The spelling of 142221116 in words is "one hundred forty-two million, two hundred twenty-one thousand, one hundred sixteen".