120906305 has 8 divisors (see below), whose sum is σ = 156248232. Its totient is φ = 89284608.

The previous prime is 120906301. The next prime is 120906337. The reversal of 120906305 is 503609021.

It can be written as a sum of positive squares in 4 ways, for example, as 6822544 + 114083761 = 2612^2 + 10681^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 120906305 - 2² = 120906301 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (120906301) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 929984 + ... + 930113.

It is an arithmetic number, because the mean of its divisors is an integer number (19531029).

Almost surely, 2^120906305 is an apocalyptic number.

It is an amenable number.

120906305 is a deficient number, since it is larger than the sum of its proper divisors (35341927).

120906305 is a wasteful number, since it uses less digits than its factorization.

120906305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1860115.

The product of its (nonzero) digits is 1620, while the sum is 26.

The square root of 120906305 is about 10995.7403115934. The cubic root of 120906305 is about 494.4810464378.

The spelling of 120906305 in words is "one hundred twenty million, nine hundred six thousand, three hundred five".