100042420040099 has 2 divisors, whose sum is σ = 100042420040100. Its totient is φ = 100042420040098.

The previous prime is 100042420040051. The next prime is 100042420040149. The reversal of 100042420040099 is 990040024240001.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 100042420040099 - 2⁸ = 100042420039843 is a prime.

It is not a weakly prime, because it can be changed into another prime (100042420040999) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50021210020049 + 50021210020050.

It is an arithmetic number, because the mean of its divisors is an integer number (50021210020050).

Almost surely, 2^{100042420040099} is an apocalyptic number.

100042420040099 is a deficient number, since it is larger than the sum of its proper divisors (1).

100042420040099 is an equidigital number, since it uses as much as digits as its factorization.

100042420040099 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20736, while the sum is 35.

The spelling of 100042420040099 in words is "one hundred trillion, forty-two billion, four hundred twenty million, forty thousand, ninety-nine".