102009724 has 12 divisors (see below), whose sum is σ = 189018144. Its totient is φ = 48004544.

The previous prime is 102009709. The next prime is 102009749. The reversal of 102009724 is 427900201.

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, 750004 + ... + 750139.

It is an arithmetic number, because the mean of its divisors is an integer number (15751512).

Almost surely, 2^102009724 is an apocalyptic number.

It is an amenable number.

102009724 is a deficient number, since it is larger than the sum of its proper divisors (87008420).

102009724 is a wasteful number, since it uses less digits than its factorization.

102009724 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1500164 (or 1500162 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 25.

The square root of 102009724 is about 10099.9863366244. The cubic root of 102009724 is about 467.2477199861.

Adding to 102009724 its reverse (427900201), we get a palindrome (529909925).

The spelling of 102009724 in words is "one hundred two million, nine thousand, seven hundred twenty-four".