40321120 has 144 divisors (see below), whose sum is σ = 114624720. Its totient is φ = 13353984.

The previous prime is 40321117. The next prime is 40321121. The reversal of 40321120 is 2112304.

It is a self number, because there is not a number n which added to its sum of digits gives 40321120.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40321121) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 290011 + ... + 290149.

It is an arithmetic number, because the mean of its divisors is an integer number (796005).

Almost surely, 2^40321120 is an apocalyptic number.

40321120 is a gapful number since it is divisible by the number (40) 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 40321120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (57312360).

40321120 is an abundant number, since it is smaller than the sum of its proper divisors (74303600).

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

40321120 is a wasteful number, since it uses less digits than its factorization.

40321120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 205 (or 190 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 40321120 is about 6349.8913376530. The cubic root of 40321120 is about 342.9079303072.

Adding to 40321120 its reverse (2112304), we get a palindrome (42433424).

The spelling of 40321120 in words is "forty million, three hundred twenty-one thousand, one hundred twenty".