42404242440242 has 8 divisors (see below), whose sum is σ = 63667582492800. Its totient is φ = 21181714942644.

The previous prime is 42404242440169. The next prime is 42404242440251. The reversal of 42404242440242 is 24204424240424.

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

It is a junction number, because it is equal to n+sod(n) for n = 42404242440196 and 42404242440205.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 10203136142 + ... + 10203140297.

It is an arithmetic number, because the mean of its divisors is an integer number (7958447811600).

Almost surely, 2^{42404242440242} is an apocalyptic number.

42404242440242 is a deficient number, since it is larger than the sum of its proper divisors (21263340052558).

42404242440242 is a wasteful number, since it uses less digits than its factorization.

42404242440242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20406277480.

The product of its (nonzero) digits is 524288, while the sum is 38.

Adding to 42404242440242 its reverse (24204424240424), we get a palindrome (66608666680666).

The spelling of 42404242440242 in words is "forty-two trillion, four hundred four billion, two hundred forty-two million, four hundred forty thousand, two hundred forty-two".