102145144 has 16 divisors (see below), whose sum is σ = 194220720. Its totient is φ = 50352960.

The previous prime is 102145117. The next prime is 102145157. The reversal of 102145144 is 441541201.

It is a congruent number.

It is an unprimeable number.

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, 89349 + ... + 90484.

It is an arithmetic number, because the mean of its divisors is an integer number (12138795).

Almost surely, 2^102145144 is an apocalyptic number.

It is an amenable number.

102145144 is a deficient number, since it is larger than the sum of its proper divisors (92075576).

102145144 is a wasteful number, since it uses less digits than its factorization.

102145144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 179910 (or 179906 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 22.

The square root of 102145144 is about 10106.6880826510. The cubic root of 102145144 is about 467.4543888699.

Adding to 102145144 its reverse (441541201), we get a palindrome (543686345).

The spelling of 102145144 in words is "one hundred two million, one hundred forty-five thousand, one hundred forty-four".