120838558 has 16 divisors (see below), whose sum is σ = 189480960. Its totient is φ = 57727800.

The previous prime is 120838541. The next prime is 120838649. The reversal of 120838558 is 855838021.

It is a self number, because there is not a number n which added to its sum of digits gives 120838558.

It is a congruent 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 7 ways as a sum of consecutive naturals, for example, 7438 + ... + 17233.

It is an arithmetic number, because the mean of its divisors is an integer number (11842560).

Almost surely, 2^120838558 is an apocalyptic number.

120838558 is a deficient number, since it is larger than the sum of its proper divisors (68642402).

120838558 is a wasteful number, since it uses less digits than its factorization.

120838558 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24783.

The product of its (nonzero) digits is 76800, while the sum is 40.

The square root of 120838558 is about 10992.6592779000. The cubic root of 120838558 is about 494.3886722469.

The spelling of 120838558 in words is "one hundred twenty million, eight hundred thirty-eight thousand, five hundred fifty-eight".