100605103 has 4 divisors (see below), whose sum is σ = 103058928. Its totient is φ = 98151280.

The previous prime is 100605101. The next prime is 100605119. The reversal of 100605103 is 301506001.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 301506001 = 127 ⋅2374063.

It is a cyclic number.

It is not a de Polignac number, because 100605103 - 2¹ = 100605101 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100605101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1226851 + ... + 1226932.

It is an arithmetic number, because the mean of its divisors is an integer number (25764732).

Almost surely, 2^100605103 is an apocalyptic number.

100605103 is a deficient number, since it is larger than the sum of its proper divisors (2453825).

100605103 is an equidigital number, since it uses as much as digits as its factorization.

100605103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2453824.

The product of its (nonzero) digits is 90, while the sum is 16.

The square root of 100605103 is about 10030.2095192473. The cubic root of 100605103 is about 465.0932144419.

The spelling of 100605103 in words is "one hundred million, six hundred five thousand, one hundred three".