100124309 has 2 divisors, whose sum is σ = 100124310. Its totient is φ = 100124308.

The previous prime is 100124303. The next prime is 100124329. The reversal of 100124309 is 903421001.

It is an a-pointer prime, because the next prime (100124329) can be obtained adding 100124309 to its sum of digits (20).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 60497284 + 39627025 = 7778^2 + 6295^2 .

It is a cyclic number.

It is not a de Polignac number, because 100124309 - 2⁴ = 100124293 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (100124303) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50062154 + 50062155.

It is an arithmetic number, because the mean of its divisors is an integer number (50062155).

Almost surely, 2^100124309 is an apocalyptic number.

It is an amenable number.

100124309 is a deficient number, since it is larger than the sum of its proper divisors (1).

100124309 is an equidigital number, since it uses as much as digits as its factorization.

100124309 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 216, while the sum is 20.

The square root of 100124309 is about 10006.2135196087. The cubic root of 100124309 is about 464.3511341437.

The spelling of 100124309 in words is "one hundred million, one hundred twenty-four thousand, three hundred nine".