102405560 has 16 divisors (see below), whose sum is σ = 230412600. Its totient is φ = 40962208.

The previous prime is 102405557. The next prime is 102405571. The reversal of 102405560 is 65504201.

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, 1280030 + ... + 1280109.

Almost surely, 2^102405560 is an apocalyptic number.

102405560 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

102405560 is an abundant number, since it is smaller than the sum of its proper divisors (128007040).

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

102405560 is a wasteful number, since it uses less digits than its factorization.

102405560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2560150 (or 2560146 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 102405560 is about 10119.5632316815. The cubic root of 102405560 is about 467.8513054288.

Adding to 102405560 its reverse (65504201), we get a palindrome (167909761).

The spelling of 102405560 in words is "one hundred two million, four hundred five thousand, five hundred sixty".