142321220500 has 96 divisors (see below), whose sum is σ = 333080512128. Its totient is φ = 52933952000.

The previous prime is 142321220467. The next prime is 142321220513. The reversal of 142321220500 is 5022123241.

It is a happy number.

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, 604635 + ... + 806365.

It is an arithmetic number, because the mean of its divisors is an integer number (3469588668).

Almost surely, 2^142321220500 is an apocalyptic number.

142321220500 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 142321220500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (166540256064).

142321220500 is an abundant number, since it is smaller than the sum of its proper divisors (190759291628).

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

142321220500 is a wasteful number, since it uses less digits than its factorization.

142321220500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 201850 (or 201838 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 22.

Adding to 142321220500 its reverse (5022123241), we get a palindrome (147343343741).

The spelling of 142321220500 in words is "one hundred forty-two billion, three hundred twenty-one million, two hundred twenty thousand, five hundred".