40013140 has 24 divisors (see below), whose sum is σ = 84165480. Its totient is φ = 15979008.

The previous prime is 40013117. The next prime is 40013153. The reversal of 40013140 is 4131004.

It can be written as a sum of positive squares in 4 ways, for example, as 15272464 + 24740676 = 3908^2 + 4974^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 40013140.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14944 + ... + 17416.

It is an arithmetic number, because the mean of its divisors is an integer number (3506895).

Almost surely, 2^40013140 is an apocalyptic number.

It is an amenable number.

40013140 is an abundant number, since it is smaller than the sum of its proper divisors (44152340).

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

40013140 is a wasteful number, since it uses less digits than its factorization.

40013140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3291 (or 3289 counting only the distinct ones).

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

The square root of 40013140 is about 6325.5940432500. The cubic root of 40013140 is about 342.0326337087.

Adding to 40013140 its reverse (4131004), we get a palindrome (44144144).

The spelling of 40013140 in words is "forty million, thirteen thousand, one hundred forty".