120945840 has 80 divisors (see below), whose sum is σ = 379737600. Its totient is φ = 31838976.

The previous prime is 120945823. The next prime is 120945883. The reversal of 120945840 is 48549021.

It is a tau number, because it is divible by the number of its divisors (80).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15771 + ... + 22149.

It is an arithmetic number, because the mean of its divisors is an integer number (4746720).

Almost surely, 2^120945840 is an apocalyptic number.

120945840 is a gapful number since it is divisible by the number (10) 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 120945840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (189868800).

120945840 is an abundant number, since it is smaller than the sum of its proper divisors (258791760).

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

120945840 is a wasteful number, since it uses less digits than its factorization.

120945840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6474 (or 6468 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 33.

The square root of 120945840 is about 10997.5379062770. The cubic root of 120945840 is about 494.5349371420.

The spelling of 120945840 in words is "one hundred twenty million, nine hundred forty-five thousand, eight hundred forty".