102520147 has 4 divisors (see below), whose sum is σ = 102545496. Its totient is φ = 102494800.

The previous prime is 102520139. The next prime is 102520153. The reversal of 102520147 is 741025201.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 102520147 - 2³ = 102520139 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (102520547) 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 3 ways as a sum of consecutive naturals, for example, 5098 + ... + 15199.

It is an arithmetic number, because the mean of its divisors is an integer number (25636374).

Almost surely, 2^102520147 is an apocalyptic number.

102520147 is a deficient number, since it is larger than the sum of its proper divisors (25349).

102520147 is an equidigital number, since it uses as much as digits as its factorization.

102520147 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25348.

The product of its (nonzero) digits is 560, while the sum is 22.

The square root of 102520147 is about 10125.2233061795. The cubic root of 102520147 is about 468.0257415773.

Adding to 102520147 its reverse (741025201), we get a palindrome (843545348).

The spelling of 102520147 in words is "one hundred two million, five hundred twenty thousand, one hundred forty-seven".