122020352142 has 48 divisors (see below), whose sum is σ = 265232809728. Its totient is φ = 37406098080.

The previous prime is 122020352131. The next prime is 122020352149. The reversal of 122020352142 is 241253020221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122020352149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 52773 + ... + 496815.

It is an arithmetic number, because the mean of its divisors is an integer number (5525683536).

Almost surely, 2^122020352142 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 122020352142, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (132616404864).

122020352142 is an abundant number, since it is smaller than the sum of its proper divisors (143212457586).

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

122020352142 is a wasteful number, since it uses less digits than its factorization.

122020352142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 444345 (or 444332 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 24.

Adding to 122020352142 its reverse (241253020221), we get a palindrome (363273372363).

The spelling of 122020352142 in words is "one hundred twenty-two billion, twenty million, three hundred fifty-two thousand, one hundred forty-two".