142120450642 has 32 divisors (see below), whose sum is σ = 225756115200. Its totient is φ = 66913938000.

The previous prime is 142120450627. The next prime is 142120450669. The reversal of 142120450642 is 246054021241.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24287017 + ... + 24292867.

It is an arithmetic number, because the mean of its divisors is an integer number (7054878600).

Almost surely, 2^142120450642 is an apocalyptic number.

142120450642 is a deficient number, since it is larger than the sum of its proper divisors (83635664558).

142120450642 is a wasteful number, since it uses less digits than its factorization.

142120450642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9622.

The product of its (nonzero) digits is 15360, while the sum is 31.

Adding to 142120450642 its reverse (246054021241), we get a palindrome (388174471883).

The spelling of 142120450642 in words is "one hundred forty-two billion, one hundred twenty million, four hundred fifty thousand, six hundred forty-two".