142020112 has 20 divisors (see below), whose sum is σ = 296330860. Its totient is φ = 65547648.

The previous prime is 142020089. The next prime is 142020119. The reversal of 142020112 is 211020241.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 54110736 + 87909376 = 7356^2 + 9376^2 .

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a junction number, because it is equal to n+sod(n) for n = 142020092 and 142020101.

It is not an unprimeable number, because it can be changed into a prime (142020119) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 341187 + ... + 341602.

It is an arithmetic number, because the mean of its divisors is an integer number (14816543).

Almost surely, 2^142020112 is an apocalyptic number.

It is an amenable number.

142020112 is an abundant number, since it is smaller than the sum of its proper divisors (154310748).

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

142020112 is a wasteful number, since it uses less digits than its factorization.

142020112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 682810 (or 682804 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

The square root of 142020112 is about 11917.2191387085. The cubic root of 142020112 is about 521.7349740716.

Adding to 142020112 its reverse (211020241), we get a palindrome (353040353).

The spelling of 142020112 in words is "one hundred forty-two million, twenty thousand, one hundred twelve".