100673921 has 8 divisors (see below), whose sum is σ = 105416640. Its totient is φ = 95961712.

The previous prime is 100673917. The next prime is 100673987. The reversal of 100673921 is 129376001.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 100673921 - 2² = 100673917 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (100673821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 731 + ... + 14208.

It is an arithmetic number, because the mean of its divisors is an integer number (13177080).

Almost surely, 2^100673921 is an apocalyptic number.

It is an amenable number.

100673921 is a deficient number, since it is larger than the sum of its proper divisors (4742719).

100673921 is a wasteful number, since it uses less digits than its factorization.

100673921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15255.

The product of its (nonzero) digits is 2268, while the sum is 29.

The square root of 100673921 is about 10033.6394693052. The cubic root of 100673921 is about 465.1992378565.

The spelling of 100673921 in words is "one hundred million, six hundred seventy-three thousand, nine hundred twenty-one".