120115400 has 24 divisors (see below), whose sum is σ = 279268770. Its totient is φ = 48046080.

The previous prime is 120115393. The next prime is 120115403. The reversal of 120115400 is 4511021.

It can be written as a sum of positive squares in 3 ways, for example, as 111809476 + 8305924 = 10574^2 + 2882^2 .

It is not an unprimeable number, because it can be changed into a prime (120115403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 300089 + ... + 300488.

Almost surely, 2^120115400 is an apocalyptic number.

120115400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

120115400 is an abundant number, since it is smaller than the sum of its proper divisors (159153370).

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

120115400 is a wasteful number, since it uses less digits than its factorization.

120115400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 600593 (or 600584 counting only the distinct ones).

The product of its (nonzero) digits is 40, while the sum is 14.

The square root of 120115400 is about 10959.7171496348. The cubic root of 120115400 is about 493.4004758059.

Adding to 120115400 its reverse (4511021), we get a palindrome (124626421).

The spelling of 120115400 in words is "one hundred twenty million, one hundred fifteen thousand, four hundred".