100421042109 has 16 divisors (see below), whose sum is σ = 135089061888. Its totient is φ = 66351286512.

The previous prime is 100421042107. The next prime is 100421042129. The reversal of 100421042109 is 901240124001.

It is not a de Polignac number, because 100421042109 - 2¹ = 100421042107 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100421042107) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 232144 + ... + 504710.

It is an arithmetic number, because the mean of its divisors is an integer number (8443066368).

Almost surely, 2^100421042109 is an apocalyptic number.

It is an amenable number.

100421042109 is a deficient number, since it is larger than the sum of its proper divisors (34668019779).

100421042109 is a wasteful number, since it uses less digits than its factorization.

100421042109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 273664.

The product of its (nonzero) digits is 576, while the sum is 24.

The spelling of 100421042109 in words is "one hundred billion, four hundred twenty-one million, forty-two thousand, one hundred nine".