100102009 has 8 divisors (see below), whose sum is σ = 115535808. Its totient is φ = 84951600.

The previous prime is 100101973. The next prime is 100102019. The reversal of 100102009 is 900201001.

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 100102009 - 2¹⁵ = 100069241 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 100102009.

It is not an unprimeable number, because it can be changed into a prime (100102019) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 70087 + ... + 71500.

It is an arithmetic number, because the mean of its divisors is an integer number (14441976).

Almost surely, 2^100102009 is an apocalyptic number.

It is an amenable number.

100102009 is a deficient number, since it is larger than the sum of its proper divisors (15433799).

100102009 is a wasteful number, since it uses less digits than its factorization.

100102009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141695.

The product of its (nonzero) digits is 18, while the sum is 13.

The square root of 100102009 is about 10005.0991499335. The cubic root of 100102009 is about 464.3166576705.

The spelling of 100102009 in words is "one hundred million, one hundred two thousand, nine".