120078540 has 36 divisors (see below), whose sum is σ = 364238784. Its totient is φ = 32020896.

The previous prime is 120078529. The next prime is 120078547. The reversal of 120078540 is 45870021.

It is a tau number, because it is divible by the number of its divisors (36).

It is not an unprimeable number, because it can be changed into a prime (120078547) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 333372 + ... + 333731.

It is an arithmetic number, because the mean of its divisors is an integer number (10117744).

Almost surely, 2^120078540 is an apocalyptic number.

120078540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

120078540 is an abundant number, since it is smaller than the sum of its proper divisors (244160244).

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

120078540 is a wasteful number, since it uses less digits than its factorization.

120078540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 667118 (or 667113 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 27.

The square root of 120078540 is about 10958.0354078639. The cubic root of 120078540 is about 493.3500004514.

The spelling of 120078540 in words is "one hundred twenty million, seventy-eight thousand, five hundred forty".