120661634 has 24 divisors (see below), whose sum is σ = 195661440. Its totient is φ = 55699952.

The previous prime is 120661603. The next prime is 120661637. The reversal of 120661634 is 436166021.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a junction number, because it is equal to n+sod(n) for n = 120661597 and 120661606.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120661637) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 37127 + ... + 40245.

It is an arithmetic number, because the mean of its divisors is an integer number (8152560).

Almost surely, 2^120661634 is an apocalyptic number.

120661634 is a deficient number, since it is larger than the sum of its proper divisors (74999806).

120661634 is a wasteful number, since it uses less digits than its factorization.

120661634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3202 (or 3173 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 29.

The square root of 120661634 is about 10984.6089598128. The cubic root of 120661634 is about 494.1472704223.

The spelling of 120661634 in words is "one hundred twenty million, six hundred sixty-one thousand, six hundred thirty-four".