42140636055042 has 64 divisors (see below), whose sum is σ = 96649050921984. Its totient is φ = 11999250768960.

The previous prime is 42140636055041. The next prime is 42140636055059. The reversal of 42140636055042 is 24055063604124.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a junction number, because it is equal to n+sod(n) for n = 42140636054985 and 42140636055003.

It is not an unprimeable number, because it can be changed into a prime (42140636055041) 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 31 ways as a sum of consecutive naturals, for example, 54080733 + ... + 54854415.

It is an arithmetic number, because the mean of its divisors is an integer number (1510141420656).

Almost surely, 2^{42140636055042} is an apocalyptic number.

42140636055042 is a gapful number since it is divisible by the number (42) formed by its first and last digit.

42140636055042 is an abundant number, since it is smaller than the sum of its proper divisors (54508414866942).

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

42140636055042 is a wasteful number, since it uses less digits than its factorization.

42140636055042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 778103.

The product of its (nonzero) digits is 691200, while the sum is 42.

Adding to 42140636055042 its reverse (24055063604124), we get a palindrome (66195699659166).

The spelling of 42140636055042 in words is "forty-two trillion, one hundred forty billion, six hundred thirty-six million, fifty-five thousand, forty-two".