120428506 has 16 divisors (see below), whose sum is σ = 205633728. Its totient is φ = 52360000.

The previous prime is 120428501. The next prime is 120428513. The reversal of 120428506 is 605824021.

It is not an unprimeable number, because it can be changed into a prime (120428501) 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, 118495 + ... + 119506.

It is an arithmetic number, because the mean of its divisors is an integer number (12852108).

Almost surely, 2^120428506 is an apocalyptic number.

120428506 is a deficient number, since it is larger than the sum of its proper divisors (85205222).

120428506 is a wasteful number, since it uses less digits than its factorization.

120428506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 238037.

The product of its (nonzero) digits is 3840, while the sum is 28.

The square root of 120428506 is about 10973.9922544168. The cubic root of 120428506 is about 493.8288211291.

The spelling of 120428506 in words is "one hundred twenty million, four hundred twenty-eight thousand, five hundred six".