120555438 has 8 divisors (see below), whose sum is σ = 241110888. Its totient is φ = 40185144.

The previous prime is 120555377. The next prime is 120555439. The reversal of 120555438 is 834555021.

It is a sphenic number, since it is the product of 3 distinct primes.

120555438 is an admirable number.

It is a super-2 number, since 2×120555438² = 29067227262743688, which contains 22 as substring.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 120555399 and 120555408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120555439) 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, 10046281 + ... + 10046292.

It is an arithmetic number, because the mean of its divisors is an integer number (30138861).

Almost surely, 2^120555438 is an apocalyptic number.

120555438 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

120555438 is a wasteful number, since it uses less digits than its factorization.

120555438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20092578.

The product of its (nonzero) digits is 24000, while the sum is 33.

The square root of 120555438 is about 10979.7740413908. The cubic root of 120555438 is about 494.0022592192.

The spelling of 120555438 in words is "one hundred twenty million, five hundred fifty-five thousand, four hundred thirty-eight".