120255663 has 16 divisors (see below), whose sum is σ = 180950400. Its totient is φ = 70368480.

The previous prime is 120255659. The next prime is 120255673. The reversal of 120255663 is 366552021.

It is not a de Polignac number, because 120255663 - 2² = 120255659 is a prime.

It is a super-2 number, since 2×120255663² = 28922848967139138, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 120255663.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120255613) 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 15 ways as a sum of consecutive naturals, for example, 61873 + ... + 63786.

It is an arithmetic number, because the mean of its divisors is an integer number (11309400).

Almost surely, 2^120255663 is an apocalyptic number.

120255663 is a deficient number, since it is larger than the sum of its proper divisors (60694737).

120255663 is a wasteful number, since it uses less digits than its factorization.

120255663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125702.

The product of its (nonzero) digits is 10800, while the sum is 30.

The square root of 120255663 is about 10966.1143072649. The cubic root of 120255663 is about 493.5924548260.

It can be divided in two parts, 1202 and 55663, that added together give a palindrome (56865).

The spelling of 120255663 in words is "one hundred twenty million, two hundred fifty-five thousand, six hundred sixty-three".