42004100121 has 8 divisors (see below), whose sum is σ = 56006709984. Its totient is φ = 28002111840.

The previous prime is 42004100087. The next prime is 42004100161. The reversal of 42004100121 is 12100140024.

42004100121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 42004100121 - 2⁷ = 42004099993 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 42004100121.

It is not an unprimeable number, because it can be changed into a prime (42004100161) 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, 35941 + ... + 292061.

It is an arithmetic number, because the mean of its divisors is an integer number (7000838748).

Almost surely, 2^42004100121 is an apocalyptic number.

It is an amenable number.

42004100121 is a deficient number, since it is larger than the sum of its proper divisors (14002609863).

42004100121 is a wasteful number, since it uses less digits than its factorization.

42004100121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 310791.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 42004100121 its reverse (12100140024), we get a palindrome (54104240145).

The spelling of 42004100121 in words is "forty-two billion, four million, one hundred thousand, one hundred twenty-one".