40042043231140 has 48 divisors (see below), whose sum is σ = 85961681568000. Its totient is φ = 15660649828352.

The previous prime is 40042043231111. The next prime is 40042043231149. The reversal of 40042043231140 is 4113234024004.

It is a super-2 number, since 2×40042043231140² (a number of 28 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 40042043231099 and 40042043231108.

It is not an unprimeable number, because it can be changed into a prime (40042043231149) 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, 19943965 + ... + 21859684.

It is an arithmetic number, because the mean of its divisors is an integer number (1790868366000).

Almost surely, 2^{40042043231140} is an apocalyptic number.

It is an amenable number.

40042043231140 is an abundant number, since it is smaller than the sum of its proper divisors (45919638336860).

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

40042043231140 is a wasteful number, since it uses less digits than its factorization.

40042043231140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41804724 (or 41804722 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 28.

Adding to 40042043231140 its reverse (4113234024004), we get a palindrome (44155277255144).

The spelling of 40042043231140 in words is "forty trillion, forty-two billion, forty-three million, two hundred thirty-one thousand, one hundred forty".