102520107 has 8 divisors (see below), whose sum is σ = 151881680. Its totient is φ = 68346720.

The previous prime is 102520097. The next prime is 102520139. The reversal of 102520107 is 701025201.

It is a de Polignac number, because none of the positive numbers 2^k-102520107 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 102520107.

It is not an unprimeable number, because it can be changed into a prime (102520507) 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 7 ways as a sum of consecutive naturals, for example, 1898494 + ... + 1898547.

It is an arithmetic number, because the mean of its divisors is an integer number (18985210).

Almost surely, 2^102520107 is an apocalyptic number.

102520107 is a deficient number, since it is larger than the sum of its proper divisors (49361573).

102520107 is an equidigital number, since it uses as much as digits as its factorization.

102520107 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3797050 (or 3797044 counting only the distinct ones).

The product of its (nonzero) digits is 140, while the sum is 18.

The square root of 102520107 is about 10125.2213309142. The cubic root of 102520107 is about 468.0256807078.

Adding to 102520107 its reverse (701025201), we get a palindrome (803545308).

The spelling of 102520107 in words is "one hundred two million, five hundred twenty thousand, one hundred seven".