120101643 has 16 divisors (see below), whose sum is σ = 178356640. Its totient is φ = 79875072.

The previous prime is 120101621. The next prime is 120101647. The reversal of 120101643 is 346101021.

It is a happy number.

120101643 is a `hidden beast` number, since 1 + 20 + 1 + 0 + 1 + 643 = 666.

It is not a de Polignac number, because 120101643 - 2¹² = 120097547 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (120101647) 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 in 15 ways as a sum of consecutive naturals, for example, 6555 + ... + 16827.

It is an arithmetic number, because the mean of its divisors is an integer number (11147290).

Almost surely, 2^120101643 is an apocalyptic number.

120101643 is a deficient number, since it is larger than the sum of its proper divisors (58254997).

120101643 is a wasteful number, since it uses less digits than its factorization.

120101643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10715 (or 10709 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 120101643 is about 10959.0895151012. The cubic root of 120101643 is about 493.3816384504.

Adding to 120101643 its reverse (346101021), we get a palindrome (466202664).

The spelling of 120101643 in words is "one hundred twenty million, one hundred one thousand, six hundred forty-three".