120863138 has 16 divisors (see below), whose sum is σ = 199108800. Its totient is φ = 54567600.

The previous prime is 120863131. The next prime is 120863159. The reversal of 120863138 is 831368021.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (120863131) 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 7 ways as a sum of consecutive naturals, for example, 15158 + ... + 21713.

It is an arithmetic number, because the mean of its divisors is an integer number (12444300).

Almost surely, 2^120863138 is an apocalyptic number.

120863138 is a deficient number, since it is larger than the sum of its proper divisors (78245662).

120863138 is a wasteful number, since it uses less digits than its factorization.

120863138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37033.

The product of its (nonzero) digits is 6912, while the sum is 32.

The square root of 120863138 is about 10993.7772398753. Note that the first 3 decimals coincide. The cubic root of 120863138 is about 494.4221914864.

It can be divided in two parts, 1208 and 63138, that added together give a palindrome (64346).

The spelling of 120863138 in words is "one hundred twenty million, eight hundred sixty-three thousand, one hundred thirty-eight".