142143112 has 8 divisors (see below), whose sum is σ = 266518350. Its totient is φ = 71071552.

The previous prime is 142143109. The next prime is 142143119. The reversal of 142143112 is 211341241.

It can be written as a sum of positive squares in only one way, i.e., 88472836 + 53670276 = 9406^2 + 7326^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 142143112.

It is not an unprimeable number, because it can be changed into a prime (142143119) by changing a digit.

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 as a sum of consecutive naturals, namely, 8883937 + ... + 8883952.

Almost surely, 2^142143112 is an apocalyptic number.

It is an amenable number.

142143112 is a deficient number, since it is larger than the sum of its proper divisors (124375238).

142143112 is a wasteful number, since it uses less digits than its factorization.

142143112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17767895 (or 17767891 counting only the distinct ones).

The product of its digits is 192, while the sum is 19.

The square root of 142143112 is about 11922.3786217348. The cubic root of 142143112 is about 521.8855510650.

Adding to 142143112 its reverse (211341241), we get a palindrome (353484353).

The spelling of 142143112 in words is "one hundred forty-two million, one hundred forty-three thousand, one hundred twelve".