142122105200 has 60 divisors (see below), whose sum is σ = 359419343160. Its totient is φ = 53856794880.

The previous prime is 142122105193. The next prime is 142122105211. The reversal of 142122105200 is 2501221241.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9342539 + ... + 9357738.

It is an arithmetic number, because the mean of its divisors is an integer number (5990322386).

Almost surely, 2^142122105200 is an apocalyptic number.

142122105200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

142122105200 is an abundant number, since it is smaller than the sum of its proper divisors (217297237960).

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

142122105200 is a wasteful number, since it uses less digits than its factorization.

142122105200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18700314 (or 18700303 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 20.

Adding to 142122105200 its reverse (2501221241), we get a palindrome (144623326441).

The spelling of 142122105200 in words is "one hundred forty-two billion, one hundred twenty-two million, one hundred five thousand, two hundred".