120121040 has 80 divisors (see below), whose sum is σ = 316646400. Its totient is φ = 42011136.

The previous prime is 120121039. The next prime is 120121061. The reversal of 120121040 is 40121021.

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

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 15 ways as a sum of consecutive naturals, for example, 16721 + ... + 22799.

It is an arithmetic number, because the mean of its divisors is an integer number (3958080).

Almost surely, 2^120121040 is an apocalyptic number.

120121040 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 120121040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (158323200).

120121040 is an abundant number, since it is smaller than the sum of its proper divisors (196525360).

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

120121040 is a wasteful number, since it uses less digits than its factorization.

120121040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6124 (or 6118 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

The square root of 120121040 is about 10959.9744525250. The cubic root of 120121040 is about 493.4081981994.

Adding to 120121040 its reverse (40121021), we get a palindrome (160242061).

The spelling of 120121040 in words is "one hundred twenty million, one hundred twenty-one thousand, forty".