10202109 has 4 divisors (see below), whose sum is σ = 13602816. Its totient is φ = 6801404.

The previous prime is 10202099. The next prime is 10202117. The reversal of 10202109 is 90120201.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 90120201 = 3 ⋅30040067.

It is a cyclic number.

It is not a de Polignac number, because 10202109 - 2⁵ = 10202077 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10202119) 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 3 ways as a sum of consecutive naturals, for example, 1700349 + ... + 1700354.

It is an arithmetic number, because the mean of its divisors is an integer number (3400704).

Almost surely, 2^10202109 is an apocalyptic number.

It is an amenable number.

10202109 is a deficient number, since it is larger than the sum of its proper divisors (3400707).

10202109 is an equidigital number, since it uses as much as digits as its factorization.

10202109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3400706.

The product of its (nonzero) digits is 36, while the sum is 15.

The square root of 10202109 is about 3194.0740442263. The cubic root of 10202109 is about 216.8852345354.

The spelling of 10202109 in words is "ten million, two hundred two thousand, one hundred nine".