142122287500 has 144 divisors (see below), whose sum is σ = 315708230880. Its totient is φ = 55972800000.

The previous prime is 142122287491. The next prime is 142122287501. The reversal of 142122287500 is 5782221241.

It is not an unprimeable number, because it can be changed into a prime (142122287501) 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 47 ways as a sum of consecutive naturals, for example, 272787240 + ... + 272787760.

It is an arithmetic number, because the mean of its divisors is an integer number (2192418270).

Almost surely, 2^142122287500 is an apocalyptic number.

142122287500 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 142122287500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (157854115440).

142122287500 is an abundant number, since it is smaller than the sum of its proper divisors (173585943380).

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

142122287500 is a wasteful number, since it uses less digits than its factorization.

142122287500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 846 (or 824 counting only the distinct ones).

The product of its (nonzero) digits is 17920, while the sum is 34.

The spelling of 142122287500 in words is "one hundred forty-two billion, one hundred twenty-two million, two hundred eighty-seven thousand, five hundred".