120978280 has 16 divisors (see below), whose sum is σ = 272201220. Its totient is φ = 48391296.

The previous prime is 120978259. The next prime is 120978283. The reversal of 120978280 is 82879021.

It can be written as a sum of positive squares in 2 ways, for example, as 111894084 + 9084196 = 10578^2 + 3014^2 .

It is not an unprimeable number, because it can be changed into a prime (120978283) 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 3 ways as a sum of consecutive naturals, for example, 1512189 + ... + 1512268.

Almost surely, 2^120978280 is an apocalyptic number.

120978280 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

120978280 is an abundant number, since it is smaller than the sum of its proper divisors (151222940).

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

120978280 is a wasteful number, since it uses less digits than its factorization.

120978280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3024468 (or 3024464 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 37.

The square root of 120978280 is about 10999.0126829639. The cubic root of 120978280 is about 494.5791477828.

The spelling of 120978280 in words is "one hundred twenty million, nine hundred seventy-eight thousand, two hundred eighty".