142102120142 has 4 divisors (see below), whose sum is σ = 213153180216. Its totient is φ = 71051060070.

The previous prime is 142102120141. The next prime is 142102120163. The reversal of 142102120142 is 241021201241.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142102120141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35525530034 + ... + 35525530037.

It is an arithmetic number, because the mean of its divisors is an integer number (53288295054).

Almost surely, 2^142102120142 is an apocalyptic number.

142102120142 is a deficient number, since it is larger than the sum of its proper divisors (71051060074).

142102120142 is an equidigital number, since it uses as much as digits as its factorization.

142102120142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71051060073.

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 142102120142 its reverse (241021201241), we get a palindrome (383123321383).

The spelling of 142102120142 in words is "one hundred forty-two billion, one hundred two million, one hundred twenty thousand, one hundred forty-two".