102191411 has 6 divisors (see below), whose sum is σ = 118875780. Its totient is φ = 87592596.

The previous prime is 102191359. The next prime is 102191413. The reversal of 102191411 is 114191201.

It is a de Polignac number, because none of the positive numbers 2^k-102191411 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (102191413) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1042721 + ... + 1042818.

It is an arithmetic number, because the mean of its divisors is an integer number (19812630).

Almost surely, 2^102191411 is an apocalyptic number.

102191411 is a deficient number, since it is larger than the sum of its proper divisors (16684369).

102191411 is an equidigital number, since it uses as much as digits as its factorization.

102191411 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2085553 (or 2085546 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 20.

The square root of 102191411 is about 10108.9767533613. The cubic root of 102191411 is about 467.5249565828.

The spelling of 102191411 in words is "one hundred two million, one hundred ninety-one thousand, four hundred eleven".