40343120 has 20 divisors (see below), whose sum is σ = 93797940. Its totient is φ = 16137216.

The previous prime is 40343117. The next prime is 40343129. The reversal of 40343120 is 2134304.

It can be written as a sum of positive squares in 2 ways, for example, as 29637136 + 10705984 = 5444^2 + 3272^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40343129) 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, 252065 + ... + 252224.

It is an arithmetic number, because the mean of its divisors is an integer number (4689897).

Almost surely, 2^40343120 is an apocalyptic number.

40343120 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40343120 is an abundant number, since it is smaller than the sum of its proper divisors (53454820).

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

40343120 is a wasteful number, since it uses less digits than its factorization.

40343120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 504302 (or 504296 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 40343120 is about 6351.6234145295. The cubic root of 40343120 is about 342.9702847493.

Adding to 40343120 its reverse (2134304), we get a palindrome (42477424).

The spelling of 40343120 in words is "forty million, three hundred forty-three thousand, one hundred twenty".