421100117 has 2 divisors, whose sum is σ = 421100118. Its totient is φ = 421100116.

The previous prime is 421100101. The next prime is 421100171. The reversal of 421100117 is 711001124.

Together with next prime (421100171) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 421029361 + 70756 = 20519^2 + 266^2 .

It is a cyclic number.

It is not a de Polignac number, because 421100117 - 2⁴ = 421100101 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 421100095 and 421100104.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (421100177) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210550058 + 210550059.

It is an arithmetic number, because the mean of its divisors is an integer number (210550059).

Almost surely, 2^421100117 is an apocalyptic number.

It is an amenable number.

421100117 is a deficient number, since it is larger than the sum of its proper divisors (1).

421100117 is an equidigital number, since it uses as much as digits as its factorization.

421100117 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 56, while the sum is 17.

The square root of 421100117 is about 20520.7240856652. The cubic root of 421100117 is about 749.5405286463.

The spelling of 421100117 in words is "four hundred twenty-one million, one hundred thousand, one hundred seventeen".