102145224 has 16 divisors (see below), whose sum is σ = 255363120. Its totient is φ = 34048400.

The previous prime is 102145213. The next prime is 102145229. The reversal of 102145224 is 422541201.

It is a self number, because there is not a number n which added to its sum of digits gives 102145224.

It is not an unprimeable number, because it can be changed into a prime (102145229) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2128002 + ... + 2128049.

It is an arithmetic number, because the mean of its divisors is an integer number (15960195).

Almost surely, 2^102145224 is an apocalyptic number.

It is an amenable number.

102145224 is an abundant number, since it is smaller than the sum of its proper divisors (153217896).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

102145224 is a wasteful number, since it uses less digits than its factorization.

102145224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4256060 (or 4256056 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 21.

The square root of 102145224 is about 10106.6920404255. The cubic root of 102145224 is about 467.4545109066.

Adding to 102145224 its reverse (422541201), we get a palindrome (524686425).

The spelling of 102145224 in words is "one hundred two million, one hundred forty-five thousand, two hundred twenty-four".