100421860139 has 2 divisors, whose sum is σ = 100421860140. Its totient is φ = 100421860138.

The previous prime is 100421860129. The next prime is 100421860141. The reversal of 100421860139 is 931068124001.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 100421860139 - 2²⁰ = 100420811563 is a prime.

Together with 100421860141, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 100421860099 and 100421860108.

It is not a weakly prime, because it can be changed into another prime (100421860109) by changing a digit.

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 as a sum of consecutive naturals, namely, 50210930069 + 50210930070.

It is an arithmetic number, because the mean of its divisors is an integer number (50210930070).

Almost surely, 2^100421860139 is an apocalyptic number.

100421860139 is a deficient number, since it is larger than the sum of its proper divisors (1).

100421860139 is an equidigital number, since it uses as much as digits as its factorization.

100421860139 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10368, while the sum is 35.

The spelling of 100421860139 in words is "one hundred billion, four hundred twenty-one million, eight hundred sixty thousand, one hundred thirty-nine".