42121602645603 has 64 divisors (see below), whose sum is σ = 62029949829120. Its totient is φ = 25266795523200.

The previous prime is 42121602645601. The next prime is 42121602645631. The reversal of 42121602645603 is 30654620612124.

It is a happy number.

It is not a de Polignac number, because 42121602645603 - 2¹ = 42121602645601 is a prime.

It is not an unprimeable number, because it can be changed into a prime (42121602645601) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 176423838 + ... + 176662428.

It is an arithmetic number, because the mean of its divisors is an integer number (969217966080).

Almost surely, 2^{42121602645603} is an apocalyptic number.

42121602645603 is a deficient number, since it is larger than the sum of its proper divisors (19908347183517).

42121602645603 is a wasteful number, since it uses less digits than its factorization.

42121602645603 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 239400.

The product of its (nonzero) digits is 414720, while the sum is 42.

The spelling of 42121602645603 in words is "forty-two trillion, one hundred twenty-one billion, six hundred two million, six hundred forty-five thousand, six hundred three".