100129665 has 8 divisors (see below), whose sum is σ = 160207488. Its totient is φ = 53402480.

The previous prime is 100129657. The next prime is 100129669. The reversal of 100129665 is 566921001.

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

It is not a de Polignac number, because 100129665 - 2³ = 100129657 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (100129669) 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 in 7 ways as a sum of consecutive naturals, for example, 3337641 + ... + 3337670.

It is an arithmetic number, because the mean of its divisors is an integer number (20025936).

Almost surely, 2^100129665 is an apocalyptic number.

100129665 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

100129665 is a deficient number, since it is larger than the sum of its proper divisors (60077823).

100129665 is an equidigital number, since it uses as much as digits as its factorization.

100129665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6675319.

The product of its (nonzero) digits is 3240, while the sum is 30.

The square root of 100129665 is about 10006.4811497349. The cubic root of 100129665 is about 464.3594139190.

The spelling of 100129665 in words is "one hundred million, one hundred twenty-nine thousand, six hundred sixty-five".