40431142020340 has 12 divisors (see below), whose sum is σ = 84905398242756. Its totient is φ = 16172456808128.

The previous prime is 40431142020337. The next prime is 40431142020383. The reversal of 40431142020340 is 4302024113404.

It can be written as a sum of positive squares in 2 ways, for example, as 25078882125924 + 15352259894416 = 5007882^2 + 3918196^2 .

It is a junction number, because it is equal to n+sod(n) for n = 40431142020299 and 40431142020308.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1010778550489 + ... + 1010778550528.

It is an arithmetic number, because the mean of its divisors is an integer number (7075449853563).

Almost surely, 2^{40431142020340} is an apocalyptic number.

It is an amenable number.

40431142020340 is an abundant number, since it is smaller than the sum of its proper divisors (44474256222416).

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

40431142020340 is a wasteful number, since it uses less digits than its factorization.

40431142020340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2021557101026 (or 2021557101024 counting only the distinct ones).

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

Adding to 40431142020340 its reverse (4302024113404), we get a palindrome (44733166133744).

The spelling of 40431142020340 in words is "forty trillion, four hundred thirty-one billion, one hundred forty-two million, twenty thousand, three hundred forty".