120749785 has 8 divisors (see below), whose sum is σ = 156045960. Its totient is φ = 89169024.

The previous prime is 120749777. The next prime is 120749789. The reversal of 120749785 is 587947021.

It can be written as a sum of positive squares in 4 ways, for example, as 3655744 + 117094041 = 1912^2 + 10821^2 .

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 120749785 - 2³ = 120749777 is a prime.

It is not an unprimeable number, because it can be changed into a prime (120749789) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 928780 + ... + 928909.

It is an arithmetic number, because the mean of its divisors is an integer number (19505745).

Almost surely, 2^120749785 is an apocalyptic number.

It is an amenable number.

120749785 is a deficient number, since it is larger than the sum of its proper divisors (35296175).

120749785 is a wasteful number, since it uses less digits than its factorization.

120749785 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1857707.

The product of its (nonzero) digits is 141120, while the sum is 43.

The square root of 120749785 is about 10988.6207050749. The cubic root of 120749785 is about 494.2675764694.

The spelling of 120749785 in words is "one hundred twenty million, seven hundred forty-nine thousand, seven hundred eighty-five".