142221104 has 20 divisors (see below), whose sum is σ = 285056160. Its totient is φ = 68658240.

The previous prime is 142221097. The next prime is 142221139. The reversal of 142221104 is 401122241.

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, 152792 + ... + 153719.

It is an arithmetic number, because the mean of its divisors is an integer number (14252808).

Almost surely, 2^142221104 is an apocalyptic number.

It is an amenable number.

142221104 is an abundant number, since it is smaller than the sum of its proper divisors (142835056).

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

142221104 is a wasteful number, since it uses less digits than its factorization.

142221104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 306548 (or 306542 counting only the distinct ones).

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

The square root of 142221104 is about 11925.6489970148. The cubic root of 142221104 is about 521.9809841235.

Adding to 142221104 its reverse (401122241), we get a palindrome (543343345).

The spelling of 142221104 in words is "one hundred forty-two million, two hundred twenty-one thousand, one hundred four".