120405799 has 4 divisors (see below), whose sum is σ = 120428064. Its totient is φ = 120383536.

The previous prime is 120405797. The next prime is 120405811. The reversal of 120405799 is 997504021.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 997504021 = 1301 ⋅766721.

It is a cyclic number.

It is not a de Polignac number, because 120405799 - 2¹ = 120405797 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120405797) 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 3 ways as a sum of consecutive naturals, for example, 2754 + ... + 15760.

It is an arithmetic number, because the mean of its divisors is an integer number (30107016).

Almost surely, 2^120405799 is an apocalyptic number.

120405799 is a deficient number, since it is larger than the sum of its proper divisors (22265).

120405799 is an equidigital number, since it uses as much as digits as its factorization.

120405799 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22264.

The product of its (nonzero) digits is 22680, while the sum is 37.

The square root of 120405799 is about 10972.9576231753. The cubic root of 120405799 is about 493.7977817562.

The spelling of 120405799 in words is "one hundred twenty million, four hundred five thousand, seven hundred ninety-nine".