142105121020 has 48 divisors (see below), whose sum is σ = 300175767360. Its totient is φ = 56508512256.

The previous prime is 142105121003. The next prime is 142105121027. The reversal of 142105121020 is 20121501241.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142105121027) 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 in 15 ways as a sum of consecutive naturals, for example, 3059289 + ... + 3105391.

It is an arithmetic number, because the mean of its divisors is an integer number (6253661820).

Almost surely, 2^142105121020 is an apocalyptic number.

142105121020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

142105121020 is an abundant number, since it is smaller than the sum of its proper divisors (158070646340).

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

142105121020 is a wasteful number, since it uses less digits than its factorization.

142105121020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47014 (or 47012 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 19.

Adding to 142105121020 its reverse (20121501241), we get a palindrome (162226622261).

The spelling of 142105121020 in words is "one hundred forty-two billion, one hundred five million, one hundred twenty-one thousand, twenty".