142120122140154 has 16 divisors (see below), whose sum is σ = 284240361430080. Its totient is φ = 47373354521760.

The previous prime is 142120122140153. The next prime is 142120122140197. The reversal of 142120122140154 is 451041221021241.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (142120122140153) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24416334 + ... + 29671494.

It is an arithmetic number, because the mean of its divisors is an integer number (17765022589380).

Almost surely, 2^{142120122140154} is an apocalyptic number.

142120122140154 is an abundant number, since it is smaller than the sum of its proper divisors (142120239289926).

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

142120122140154 is a wasteful number, since it uses less digits than its factorization.

142120122140154 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9762485.

The product of its (nonzero) digits is 5120, while the sum is 30.

Adding to 142120122140154 its reverse (451041221021241), we get a palindrome (593161343161395).

The spelling of 142120122140154 in words is "one hundred forty-two trillion, one hundred twenty billion, one hundred twenty-two million, one hundred forty thousand, one hundred fifty-four".