120851440 has 20 divisors (see below), whose sum is σ = 280979784. Its totient is φ = 48340544.

The previous prime is 120851417. The next prime is 120851473. The reversal of 120851440 is 44158021.

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 755242 + ... + 755401.

Almost surely, 2^120851440 is an apocalyptic number.

120851440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

120851440 is an abundant number, since it is smaller than the sum of its proper divisors (160128344).

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

120851440 is a wasteful number, since it uses less digits than its factorization.

120851440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1510656 (or 1510650 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 25.

The square root of 120851440 is about 10993.2451987573. The cubic root of 120851440 is about 494.4062397316.

The spelling of 120851440 in words is "one hundred twenty million, eight hundred fifty-one thousand, four hundred forty".