120143440 has 60 divisors (see below), whose sum is σ = 287348796. Its totient is φ = 46715904.

The previous prime is 120143417. The next prime is 120143453. The reversal of 120143440 is 44341021.

It can be written as a sum of positive squares in 6 ways, for example, as 8714304 + 111429136 = 2952^2 + 10556^2 .

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 11 ways as a sum of consecutive naturals, for example, 108972 + ... + 110068.

Almost surely, 2^120143440 is an apocalyptic number.

120143440 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 120143440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (143674398).

120143440 is an abundant number, since it is smaller than the sum of its proper divisors (167205356).

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

120143440 is a wasteful number, since it uses less digits than its factorization.

120143440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1184 (or 1141 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 120143440 is about 10960.9963050810. The cubic root of 120143440 is about 493.4388663119.

Adding to 120143440 its reverse (44341021), we get a palindrome (164484461).

The spelling of 120143440 in words is "one hundred twenty million, one hundred forty-three thousand, four hundred forty".