102120422242 has 8 divisors (see below), whose sum is σ = 153838061676. Its totient is φ = 50841068352.

The previous prime is 102120422233. The next prime is 102120422279. The reversal of 102120422242 is 242224021201.

It can be written as a sum of positive squares in 2 ways, for example, as 97743144321 + 4377277921 = 312639^2 + 66161^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 109570803 + ... + 109571734.

Almost surely, 2^102120422242 is an apocalyptic number.

102120422242 is a deficient number, since it is larger than the sum of its proper divisors (51717639434).

102120422242 is a wasteful number, since it uses less digits than its factorization.

102120422242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 219142772.

The product of its (nonzero) digits is 1024, while the sum is 22.

Adding to 102120422242 its reverse (242224021201), we get a palindrome (344344443443).

The spelling of 102120422242 in words is "one hundred two billion, one hundred twenty million, four hundred twenty-two thousand, two hundred forty-two".