120312440 has 16 divisors (see below), whose sum is σ = 270703080. Its totient is φ = 48124960.

The previous prime is 120312403. The next prime is 120312443. The reversal of 120312440 is 44213021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120312443) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1503866 + ... + 1503945.

Almost surely, 2^120312440 is an apocalyptic number.

120312440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

120312440 is an abundant number, since it is smaller than the sum of its proper divisors (150390640).

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

120312440 is a wasteful number, since it uses less digits than its factorization.

120312440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3007822 (or 3007818 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 120312440 is about 10968.7027491860. The cubic root of 120312440 is about 493.6701234884.

Adding to 120312440 its reverse (44213021), we get a palindrome (164525461).

The spelling of 120312440 in words is "one hundred twenty million, three hundred twelve thousand, four hundred forty".