120688045 has 4 divisors (see below), whose sum is σ = 144825660. Its totient is φ = 96550432.

The previous prime is 120688027. The next prime is 120688067. The reversal of 120688045 is 540886021.

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

It can be written as a sum of positive squares in 2 ways, for example, as 77404804 + 43283241 = 8798^2 + 6579^2 .

It is a cyclic number.

It is not a de Polignac number, because 120688045 - 2¹¹ = 120685997 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 120688045.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12068800 + ... + 12068809.

It is an arithmetic number, because the mean of its divisors is an integer number (36206415).

Almost surely, 2^120688045 is an apocalyptic number.

It is an amenable number.

120688045 is a deficient number, since it is larger than the sum of its proper divisors (24137615).

120688045 is an equidigital number, since it uses as much as digits as its factorization.

120688045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24137614.

The product of its (nonzero) digits is 15360, while the sum is 34.

The square root of 120688045 is about 10985.8110761109. The cubic root of 120688045 is about 494.1833215708.

The spelling of 120688045 in words is "one hundred twenty million, six hundred eighty-eight thousand, forty-five".