40342043442 has 32 divisors (see below), whose sum is σ = 81692341632. Its totient is φ = 13280166144.

The previous prime is 40342043407. The next prime is 40342043449. The reversal of 40342043442 is 24434024304.

It is not an unprimeable number, because it can be changed into a prime (40342043449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 80403 + ... + 295209.

It is an arithmetic number, because the mean of its divisors is an integer number (2552885676).

Almost surely, 2^40342043442 is an apocalyptic number.

40342043442 is an abundant number, since it is smaller than the sum of its proper divisors (41350298190).

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

40342043442 is a wasteful number, since it uses less digits than its factorization.

40342043442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 215202.

The product of its (nonzero) digits is 36864, while the sum is 30.

Adding to 40342043442 its reverse (24434024304), we get a palindrome (64776067746).

The spelling of 40342043442 in words is "forty billion, three hundred forty-two million, forty-three thousand, four hundred forty-two".