120978 has 48 divisors (see below), whose sum is σ = 314496. Its totient is φ = 33120.

The previous prime is 120977. The next prime is 120997. The reversal of 120978 is 879021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120977) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2551 + ... + 2597.

It is an arithmetic number, because the mean of its divisors is an integer number (6552).

2¹²⁰⁹⁷⁸ is an apocalyptic number.

120978 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 120978, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (157248).

120978 is an abundant number, since it is smaller than the sum of its proper divisors (193518).

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

120978 is a wasteful number, since it uses less digits than its factorization.

120978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79 (or 76 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 27.

The square root of 120978 is about 347.8189184044. The cubic root of 120978 is about 49.4578766220.

Adding to 120978 its reverse (879021), we get a palindrome (999999).

The spelling of 120978 in words is "one hundred twenty thousand, nine hundred seventy-eight".