120666265 has 4 divisors (see below), whose sum is σ = 144799524. Its totient is φ = 96533008.

The previous prime is 120666253. The next prime is 120666281. The reversal of 120666265 is 562666021.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 562666021 = 919 ⋅612259.

It can be written as a sum of positive squares in 2 ways, for example, as 81378441 + 39287824 = 9021^2 + 6268^2 .

It is a cyclic number.

It is not a de Polignac number, because 120666265 - 2¹⁷ = 120535193 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 120666265.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 12066622 + ... + 12066631.

It is an arithmetic number, because the mean of its divisors is an integer number (36199881).

Almost surely, 2^120666265 is an apocalyptic number.

It is an amenable number.

120666265 is a deficient number, since it is larger than the sum of its proper divisors (24133259).

120666265 is an equidigital number, since it uses as much as digits as its factorization.

120666265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24133258.

The product of its (nonzero) digits is 25920, while the sum is 34.

The square root of 120666265 is about 10984.8197527315. The cubic root of 120666265 is about 494.1535921410.

The spelling of 120666265 in words is "one hundred twenty million, six hundred sixty-six thousand, two hundred sixty-five".