120255440 has 40 divisors (see below), whose sum is σ = 280729800. Its totient is φ = 47906816.

The previous prime is 120255413. The next prime is 120255493. The reversal of 120255440 is 44552021.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 34951744 + 85303696 = 5912^2 + 9236^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-2 number, since 2×120255440² = 28922741699187200, which contains 22 as substring.

It is a congruent number.

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, 17636 + ... + 23484.

It is an arithmetic number, because the mean of its divisors is an integer number (7018245).

Almost surely, 2^120255440 is an apocalyptic number.

120255440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

120255440 is an abundant number, since it is smaller than the sum of its proper divisors (160474360).

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

120255440 is a wasteful number, since it uses less digits than its factorization.

120255440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6119 (or 6113 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 23.

The square root of 120255440 is about 10966.1041395748. The cubic root of 120255440 is about 493.5921497227.

The spelling of 120255440 in words is "one hundred twenty million, two hundred fifty-five thousand, four hundred forty".