42042340231040 has 128 divisors (see below), whose sum is σ = 107185286728800. Its totient is φ = 15713835614208.

The previous prime is 42042340230997. The next prime is 42042340231043. The reversal of 42042340231040 is 4013204324024.

It is a tau number, because it is divible by the number of its divisors (128).

It is a junction number, because it is equal to n+sod(n) for n = 42042340230994 and 42042340231012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42042340231043) 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, 12387629 + ... + 15412268.

Almost surely, 2^{42042340231040} is an apocalyptic number.

42042340231040 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

42042340231040 is an abundant number, since it is smaller than the sum of its proper divisors (65142946497760).

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

42042340231040 is a wasteful number, since it uses less digits than its factorization.

42042340231040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27800072 (or 27800060 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 29.

Adding to 42042340231040 its reverse (4013204324024), we get a palindrome (46055544555064).

The spelling of 42042340231040 in words is "forty-two trillion, forty-two billion, three hundred forty million, two hundred thirty-one thousand, forty".