142226121688 has 128 divisors (see below), whose sum is σ = 332913600000. Its totient is φ = 56765971584.

The previous prime is 142226121647. The next prime is 142226121727. The reversal of 142226121688 is 886121622241.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3052906 + ... + 3099142.

It is an arithmetic number, because the mean of its divisors is an integer number (2600887500).

Almost surely, 2^142226121688 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 142226121688, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (166456800000).

142226121688 is an abundant number, since it is smaller than the sum of its proper divisors (190687478312).

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

142226121688 is a wasteful number, since it uses less digits than its factorization.

142226121688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46342 (or 46324 counting only the distinct ones).

The product of its digits is 147456, while the sum is 43.

The spelling of 142226121688 in words is "one hundred forty-two billion, two hundred twenty-six million, one hundred twenty-one thousand, six hundred eighty-eight".