42121123044208 has 40 divisors (see below), whose sum is σ = 87889084332336. Its totient is φ = 19440133209600.

The previous prime is 42121123044191. The next prime is 42121123044227. The reversal of 42121123044208 is 80244032112124.

42121123044208 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8654988 + ... + 12615508.

Almost surely, 2^{42121123044208} is an apocalyptic number.

It is an amenable number.

42121123044208 is an abundant number, since it is smaller than the sum of its proper divisors (45767961288128).

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

42121123044208 is a wasteful number, since it uses less digits than its factorization.

42121123044208 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4011673 (or 4011667 counting only the distinct ones).

The product of its (nonzero) digits is 24576, while the sum is 34.

The spelling of 42121123044208 in words is "forty-two trillion, one hundred twenty-one billion, one hundred twenty-three million, forty-four thousand, two hundred eight".