120752779 has 4 divisors (see below), whose sum is σ = 138003184. Its totient is φ = 103502376.

The previous prime is 120752767. The next prime is 120752851. The reversal of 120752779 is 977257021.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 977257021 = 13 ⋅75173617.

It is a cyclic number.

It is not a de Polignac number, because 120752779 - 2⁵ = 120752747 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (120752279) by changing a digit.

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, 8625192 + ... + 8625205.

It is an arithmetic number, because the mean of its divisors is an integer number (34500796).

Almost surely, 2^120752779 is an apocalyptic number.

120752779 is a deficient number, since it is larger than the sum of its proper divisors (17250405).

120752779 is an equidigital number, since it uses as much as digits as its factorization.

120752779 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17250404.

The product of its (nonzero) digits is 61740, while the sum is 40.

The square root of 120752779 is about 10988.7569360688. The cubic root of 120752779 is about 494.2716615695.

The spelling of 120752779 in words is "one hundred twenty million, seven hundred fifty-two thousand, seven hundred seventy-nine".