102543105 has 16 divisors (see below), whose sum is σ = 187507584. Its totient is φ = 46876800.

The previous prime is 102543083. The next prime is 102543113. The reversal of 102543105 is 501345201.

It is not a de Polignac number, because 102543105 - 2⁵ = 102543073 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 488196 + ... + 488405.

It is an arithmetic number, because the mean of its divisors is an integer number (11719224).

Almost surely, 2^102543105 is an apocalyptic number.

102543105 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

102543105 is a deficient number, since it is larger than the sum of its proper divisors (84964479).

102543105 is an equidigital number, since it uses as much as digits as its factorization.

102543105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 976616.

The product of its (nonzero) digits is 600, while the sum is 21.

The square root of 102543105 is about 10126.3569461085. The cubic root of 102543105 is about 468.0606749808.

Adding to 102543105 its reverse (501345201), we get a palindrome (603888306).

The spelling of 102543105 in words is "one hundred two million, five hundred forty-three thousand, one hundred five".