122520352142 has 16 divisors (see below), whose sum is σ = 186912007920. Its totient is φ = 60216533568.

The previous prime is 122520352127. The next prime is 122520352181. The reversal of 122520352142 is 241253025221.

It is a happy number.

It is a super-2 number, since 2×122520352142² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 1515488 + ... + 1594284.

It is an arithmetic number, because the mean of its divisors is an integer number (11682000495).

Almost surely, 2^122520352142 is an apocalyptic number.

122520352142 is a deficient number, since it is larger than the sum of its proper divisors (64391655778).

122520352142 is a wasteful number, since it uses less digits than its factorization.

122520352142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92035.

The product of its (nonzero) digits is 9600, while the sum is 29.

Adding to 122520352142 its reverse (241253025221), we get a palindrome (363773377363).

The spelling of 122520352142 in words is "one hundred twenty-two billion, five hundred twenty million, three hundred fifty-two thousand, one hundred forty-two".