440123140 has 48 divisors (see below), whose sum is σ = 982018800. Its totient is φ = 165376512.

The previous prime is 440123137. The next prime is 440123153. The reversal of 440123140 is 41321044.

It can be written as a sum of positive squares in 8 ways, for example, as 46656 + 440076484 = 216^2 + 20978^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11206 + ... + 31714.

It is an arithmetic number, because the mean of its divisors is an integer number (20458725).

Almost surely, 2^440123140 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 440123140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (491009400).

440123140 is an abundant number, since it is smaller than the sum of its proper divisors (541895660).

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

440123140 is a wasteful number, since it uses less digits than its factorization.

440123140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20584 (or 20582 counting only the distinct ones).

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

The square root of 440123140 is about 20979.1119926464. Note that the first 3 decimals coincide. The cubic root of 440123140 is about 760.6614394078.

Adding to 440123140 its reverse (41321044), we get a palindrome (481444184).

The spelling of 440123140 in words is "four hundred forty million, one hundred twenty-three thousand, one hundred forty".