120420835 has 4 divisors (see below), whose sum is σ = 144505008. Its totient is φ = 96336664.

The previous prime is 120420821. The next prime is 120420857. The reversal of 120420835 is 538024021.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 538024021 = 13781 ⋅39041.

It is a cyclic number.

It is not a de Polignac number, because 120420835 - 2⁹ = 120420323 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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, 12042079 + ... + 12042088.

It is an arithmetic number, because the mean of its divisors is an integer number (36126252).

Almost surely, 2^120420835 is an apocalyptic number.

120420835 is a deficient number, since it is larger than the sum of its proper divisors (24084173).

120420835 is an equidigital number, since it uses as much as digits as its factorization.

120420835 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24084172.

The product of its (nonzero) digits is 1920, while the sum is 25.

The square root of 120420835 is about 10973.6427406764. The cubic root of 120420835 is about 493.8183356788.

Adding to 120420835 its reverse (538024021), we get a palindrome (658444856).

The spelling of 120420835 in words is "one hundred twenty million, four hundred twenty thousand, eight hundred thirty-five".