120420256 has 48 divisors (see below), whose sum is σ = 260396640. Its totient is φ = 54362880.

The previous prime is 120420241. The next prime is 120420323. The reversal of 120420256 is 652024021.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 54175 + ... + 56353.

It is an arithmetic number, because the mean of its divisors is an integer number (5424930).

Almost surely, 2^120420256 is an apocalyptic number.

120420256 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 120420256, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (130198320).

120420256 is an abundant number, since it is smaller than the sum of its proper divisors (139976384).

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

120420256 is a wasteful number, since it uses less digits than its factorization.

120420256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2357 (or 2349 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 120420256 is about 10973.6163592500. The cubic root of 120420256 is about 493.8175442286.

Adding to 120420256 its reverse (652024021), we get a palindrome (772444277).

The spelling of 120420256 in words is "one hundred twenty million, four hundred twenty thousand, two hundred fifty-six".