102000091 has 8 divisors (see below), whose sum is σ = 103680000. Its totient is φ = 100327080.

The previous prime is 102000077. The next prime is 102000109. The reversal of 102000091 is 190000201.

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 102000091 - 2²¹ = 99902939 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (102000061) 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, 33990 + ... + 36868.

It is an arithmetic number, because the mean of its divisors is an integer number (12960000).

Almost surely, 2^102000091 is an apocalyptic number.

102000091 is a deficient number, since it is larger than the sum of its proper divisors (1679909).

102000091 is an equidigital number, since it uses as much as digits as its factorization.

102000091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3449.

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

The square root of 102000091 is about 10099.5094435324. The cubic root of 102000091 is about 467.2330117838.

Adding to 102000091 its reverse (190000201), we get a palindrome (292000292).

The spelling of 102000091 in words is "one hundred two million, ninety-one", and thus it is an aban number.