42042145414242 has 16 divisors (see below), whose sum is σ = 84112900693920. Its totient is φ = 14009280160512.

The previous prime is 42042145414231. The next prime is 42042145414249. The reversal of 42042145414242 is 24241454124024.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 42042145414242.

It is not an unprimeable number, because it can be changed into a prime (42042145414249) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1192058623 + ... + 1192093890.

It is an arithmetic number, because the mean of its divisors is an integer number (5257056293370).

Almost surely, 2^{42042145414242} is an apocalyptic number.

42042145414242 is an abundant number, since it is smaller than the sum of its proper divisors (42070755279678).

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

42042145414242 is a wasteful number, since it uses less digits than its factorization.

42042145414242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2384155457.

The product of its (nonzero) digits is 327680, while the sum is 39.

Adding to 42042145414242 its reverse (24241454124024), we get a palindrome (66283599538266).

The spelling of 42042145414242 in words is "forty-two trillion, forty-two billion, one hundred forty-five million, four hundred fourteen thousand, two hundred forty-two".