100042420040121 has 32 divisors (see below), whose sum is σ = 149904706694400. Its totient is φ = 58884557048064.

The previous prime is 100042420040099. The next prime is 100042420040149. The reversal of 100042420040121 is 121040024240001.

It is not a de Polignac number, because 100042420040121 - 2⁷ = 100042420039993 is a prime.

It is not an unprimeable number, because it can be changed into a prime (100042420047121) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 13001955 + ... + 19212903.

It is an arithmetic number, because the mean of its divisors is an integer number (4684522084200).

Almost surely, 2^{100042420040121} is an apocalyptic number.

It is an amenable number.

100042420040121 is a deficient number, since it is larger than the sum of its proper divisors (49862286654279).

100042420040121 is a wasteful number, since it uses less digits than its factorization.

100042420040121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6228945.

The product of its (nonzero) digits is 512, while the sum is 21.

Adding to 100042420040121 its reverse (121040024240001), we get a palindrome (221082444280122).

The spelling of 100042420040121 in words is "one hundred trillion, forty-two billion, four hundred twenty million, forty thousand, one hundred twenty-one".