120420134242 has 4 divisors (see below), whose sum is σ = 180630201366. Its totient is φ = 60210067120.

The previous prime is 120420134171. The next prime is 120420134273. The reversal of 120420134242 is 242431024021.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 242431024021 = 1613 ⋅150298217.

It can be written as a sum of positive squares in only one way, i.e., 92678233761 + 27741900481 = 304431^2 + 166559^2 .

It is a super-2 number, since 2×120420134242² (a number of 23 digits) contains 22 as substring.

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 as a sum of consecutive naturals, namely, 30105033559 + ... + 30105033562.

Almost surely, 2^120420134242 is an apocalyptic number.

120420134242 is a deficient number, since it is larger than the sum of its proper divisors (60210067124).

120420134242 is an equidigital number, since it uses as much as digits as its factorization.

120420134242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60210067123.

The product of its (nonzero) digits is 3072, while the sum is 25.

Adding to 120420134242 its reverse (242431024021), we get a palindrome (362851158263).

The spelling of 120420134242 in words is "one hundred twenty billion, four hundred twenty million, one hundred thirty-four thousand, two hundred forty-two".