102503144 has 8 divisors (see below), whose sum is σ = 192193410. Its totient is φ = 51251568.

The previous prime is 102503131. The next prime is 102503153. The reversal of 102503144 is 441305201.

It can be written as a sum of positive squares in only one way, i.e., 97259044 + 5244100 = 9862^2 + 2290^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6406439 + ... + 6406454.

Almost surely, 2^102503144 is an apocalyptic number.

It is an amenable number.

102503144 is a deficient number, since it is larger than the sum of its proper divisors (89690266).

102503144 is a wasteful number, since it uses less digits than its factorization.

102503144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12812899 (or 12812895 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 102503144 is about 10124.3836355602. The cubic root of 102503144 is about 467.9998660725. Note that the first 3 decimals are identical.

Adding to 102503144 its reverse (441305201), we get a palindrome (543808345).

The spelling of 102503144 in words is "one hundred two million, five hundred three thousand, one hundred forty-four".