102127105 has 8 divisors (see below), whose sum is σ = 125541864. Its totient is φ = 79708800.

The previous prime is 102127097. The next prime is 102127139. The reversal of 102127105 is 501721201.

It can be written as a sum of positive squares in 4 ways, for example, as 14348944 + 87778161 = 3788^2 + 9369^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 102127105 - 2³ = 102127097 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 248886 + ... + 249295.

It is an arithmetic number, because the mean of its divisors is an integer number (15692733).

Almost surely, 2^102127105 is an apocalyptic number.

It is an amenable number.

102127105 is a deficient number, since it is larger than the sum of its proper divisors (23414759).

102127105 is an equidigital number, since it uses as much as digits as its factorization.

102127105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 498227.

The product of its (nonzero) digits is 140, while the sum is 19.

The square root of 102127105 is about 10105.7956143987. The cubic root of 102127105 is about 467.4268695126.

Adding to 102127105 its reverse (501721201), we get a palindrome (603848306).

The spelling of 102127105 in words is "one hundred two million, one hundred twenty-seven thousand, one hundred five".