102405044 has 24 divisors (see below), whose sum is σ = 209807808. Its totient is φ = 42816960.

The previous prime is 102404987. The next prime is 102405049. The reversal of 102405044 is 440504201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102405049) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 43454 + ... + 45749.

It is an arithmetic number, because the mean of its divisors is an integer number (8741992).

Almost surely, 2^102405044 is an apocalyptic number.

102405044 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

102405044 is an abundant number, since it is smaller than the sum of its proper divisors (107402764).

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

102405044 is a wasteful number, since it uses less digits than its factorization.

102405044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89255 (or 89253 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 20.

The square root of 102405044 is about 10119.5377364779. The cubic root of 102405044 is about 467.8505196262.

Adding to 102405044 its reverse (440504201), we get a palindrome (542909245).

The spelling of 102405044 in words is "one hundred two million, four hundred five thousand, forty-four".