102145107 has 16 divisors (see below), whose sum is σ = 139754880. Its totient is φ = 66337152.

The previous prime is 102145079. The next prime is 102145117. The reversal of 102145107 is 701541201.

It is a happy number.

It is not a de Polignac number, because 102145107 - 2⁷ = 102144979 is a prime.

It is not an unprimeable number, because it can be changed into a prime (102145117) 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 15 ways as a sum of consecutive naturals, for example, 17448 + ... + 22554.

It is an arithmetic number, because the mean of its divisors is an integer number (8734680).

Almost surely, 2^102145107 is an apocalyptic number.

102145107 is a deficient number, since it is larger than the sum of its proper divisors (37609773).

102145107 is a wasteful number, since it uses less digits than its factorization.

102145107 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5282.

The product of its (nonzero) digits is 280, while the sum is 21.

The square root of 102145107 is about 10106.6862521798. The cubic root of 102145107 is about 467.4543324280.

Adding to 102145107 its reverse (701541201), we get a palindrome (803686308).

The spelling of 102145107 in words is "one hundred two million, one hundred forty-five thousand, one hundred seven".