142221141 has 12 divisors (see below), whose sum is σ = 205588032. Its totient is φ = 94741416.

The previous prime is 142221139. The next prime is 142221173. The reversal of 142221141 is 141122241.

It is not a de Polignac number, because 142221141 - 2¹ = 142221139 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142223141) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8070 + ... + 18696.

It is an arithmetic number, because the mean of its divisors is an integer number (17132336).

Almost surely, 2^142221141 is an apocalyptic number.

It is an amenable number.

142221141 is a deficient number, since it is larger than the sum of its proper divisors (63366891).

142221141 is a wasteful number, since it uses less digits than its factorization.

142221141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12120 (or 12117 counting only the distinct ones).

The product of its digits is 128, while the sum is 18.

The square root of 142221141 is about 11925.6505482930. The cubic root of 142221141 is about 521.9810293894.

Adding to 142221141 its reverse (141122241), we get a palindrome (283343382).

The spelling of 142221141 in words is "one hundred forty-two million, two hundred twenty-one thousand, one hundred forty-one".