142117018071220 has 96 divisors (see below), whose sum is σ = 315503431689600. Its totient is φ = 53623503360000.

The previous prime is 142117018071181. The next prime is 142117018071221. The reversal of 142117018071220 is 22170810711241.

It is a self number, because there is not a number n which added to its sum of digits gives 142117018071220.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142117018071221) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 641040751 + ... + 641262409.

It is an arithmetic number, because the mean of its divisors is an integer number (3286494080100).

Almost surely, 2^{142117018071220} is an apocalyptic number.

142117018071220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 142117018071220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (157751715844800).

142117018071220 is an abundant number, since it is smaller than the sum of its proper divisors (173386413618380).

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

142117018071220 is a wasteful number, since it uses less digits than its factorization.

142117018071220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 228929 (or 228927 counting only the distinct ones).

The product of its (nonzero) digits is 12544, while the sum is 37.

Adding to 142117018071220 its reverse (22170810711241), we get a palindrome (164287828782461).

The spelling of 142117018071220 in words is "one hundred forty-two trillion, one hundred seventeen billion, eighteen million, seventy-one thousand, two hundred twenty".