102405244 has 12 divisors (see below), whose sum is σ = 179280864. Its totient is φ = 51182144.

The previous prime is 102405181. The next prime is 102405271. The reversal of 102405244 is 442504201.

It is a happy number.

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, 14397 + ... + 20299.

It is an arithmetic number, because the mean of its divisors is an integer number (14940072).

Almost surely, 2^102405244 is an apocalyptic number.

It is an amenable number.

102405244 is a deficient number, since it is larger than the sum of its proper divisors (76875620).

102405244 is a wasteful number, since it uses less digits than its factorization.

102405244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10244 (or 10242 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 22.

The square root of 102405244 is about 10119.5476183474. The cubic root of 102405244 is about 467.8508242012.

Adding to 102405244 its reverse (442504201), we get a palindrome (544909445).

The spelling of 102405244 in words is "one hundred two million, four hundred five thousand, two hundred forty-four".