40400043140 has 48 divisors (see below), whose sum is σ = 89379763200. Its totient is φ = 15296735232.

The previous prime is 40400043139. The next prime is 40400043143. The reversal of 40400043140 is 4134000404.

It is a super-3 number, since 3×40400043140³ (a number of 33 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is not an unprimeable number, because it can be changed into a prime (40400043143) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 418781 + ... + 506139.

It is an arithmetic number, because the mean of its divisors is an integer number (1862078400).

Almost surely, 2^40400043140 is an apocalyptic number.

It is an amenable number.

40400043140 is an abundant number, since it is smaller than the sum of its proper divisors (48979720060).

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

40400043140 is a wasteful number, since it uses less digits than its factorization.

40400043140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88604 (or 88602 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 20.

Adding to 40400043140 its reverse (4134000404), we get a palindrome (44534043544).

The spelling of 40400043140 in words is "forty billion, four hundred million, forty-three thousand, one hundred forty".