120106642 has 4 divisors (see below), whose sum is σ = 180159966. Its totient is φ = 60053320.

The previous prime is 120106633. The next prime is 120106643. The reversal of 120106642 is 246601021.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 85544001 + 34562641 = 9249^2 + 5879^2 .

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (120106643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30026659 + ... + 30026662.

Almost surely, 2^120106642 is an apocalyptic number.

120106642 is a deficient number, since it is larger than the sum of its proper divisors (60053324).

120106642 is an equidigital number, since it uses as much as digits as its factorization.

120106642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60053323.

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 120106642 is about 10959.3175882443. The cubic root of 120106642 is about 493.3884837094.

Adding to 120106642 its reverse (246601021), we get a palindrome (366707663).

The spelling of 120106642 in words is "one hundred twenty million, one hundred six thousand, six hundred forty-two".