102147243 has 16 divisors (see below), whose sum is σ = 149753856. Its totient is φ = 61417440.

The previous prime is 102147233. The next prime is 102147289. The reversal of 102147243 is 342741201.

It is a happy number.

It is not a de Polignac number, because 102147243 - 2⁶ = 102147179 is a prime.

It is not an unprimeable number, because it can be changed into a prime (102147233) 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, 7996 + ... + 16377.

It is an arithmetic number, because the mean of its divisors is an integer number (9359616).

Almost surely, 2^102147243 is an apocalyptic number.

102147243 is a deficient number, since it is larger than the sum of its proper divisors (47606613).

102147243 is a wasteful number, since it uses less digits than its factorization.

102147243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24514.

The product of its (nonzero) digits is 1344, while the sum is 24.

The square root of 102147243 is about 10106.7919242458. The cubic root of 102147243 is about 467.4575907844.

Adding to 102147243 its reverse (342741201), we get a palindrome (444888444).

The spelling of 102147243 in words is "one hundred two million, one hundred forty-seven thousand, two hundred forty-three".