120556278 has 24 divisors (see below), whose sum is σ = 261424800. Its totient is φ = 40151664.

The previous prime is 120556259. The next prime is 120556279. The reversal of 120556278 is 872655021.

It is a happy number.

120556278 is a `hidden beast` number, since 1 + 20 + 5 + 5 + 627 + 8 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120556279) 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 11 ways as a sum of consecutive naturals, for example, 28803 + ... + 32721.

It is an arithmetic number, because the mean of its divisors is an integer number (10892700).

Almost surely, 2^120556278 is an apocalyptic number.

120556278 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

120556278 is an abundant number, since it is smaller than the sum of its proper divisors (140868522).

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

120556278 is a wasteful number, since it uses less digits than its factorization.

120556278 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5636 (or 5633 counting only the distinct ones).

The product of its (nonzero) digits is 33600, while the sum is 36.

The square root of 120556278 is about 10979.8122934775. The cubic root of 120556278 is about 494.0034065777.

The spelling of 120556278 in words is "one hundred twenty million, five hundred fifty-six thousand, two hundred seventy-eight".