42040140042 has 8 divisors (see below), whose sum is σ = 84080280096. Its totient is φ = 14013380012.

The previous prime is 42040140041. The next prime is 42040140047. The reversal of 42040140042 is 24004104024.

It is a sphenic number, since it is the product of 3 distinct primes.

42040140042 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (42040140041) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3503344998 + ... + 3503345009.

It is an arithmetic number, because the mean of its divisors is an integer number (10510035012).

Almost surely, 2^42040140042 is an apocalyptic number.

42040140042 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

42040140042 is a wasteful number, since it uses less digits than its factorization.

42040140042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7006690012.

The product of its (nonzero) digits is 1024, while the sum is 21.

Adding to 42040140042 its reverse (24004104024), we get a palindrome (66044244066).

The spelling of 42040140042 in words is "forty-two billion, forty million, one hundred forty thousand, forty-two".